Step 3. Information About The Walls: Wall 1 and 3 use the room length dimension, wall 2 + 4 use the width.
For electrical engineers this excel sheet is for transformer sizing, It is simple and easy to use. For more details about preliminary heat exchanger design, the parameters involved, and example heat exchanger calculations, see the articles: Preliminary Heat Exchanger Design Example and Fundamentals of Heat Exchanger Theory and Design.. When doing this, make sure the radiator is in the upright position. WebThis is the measurement used to figure out how much energy is needed to heat (and cool) a room based on its size. A BTU or British Thermal Unit is an approximation of the amount of energy required to heat 1lb (one pound) of water from 39F to 40F, and is roughly equal to 1.055 KJoules. For more background information about the different types of shell and tube heat exchangers, see the article: Types of Shell and Tube Heat Exchangers., The Excel spreadsheet template at the left is for double pipe heat exchanger design. In this project learn about the ideal temperatures for different rooms in the home such as living rooms, dinning rooms, bedrooms and kitchens. If you use Metres youll need to multiply your final BTU measurement by 35.31 (this is because there are 3.28 Feet in every Metre, and when youre working in 3 dimensions you need to use 3.28 cubed (3.28 = 35.31). Below, you can see the the multiplication figure attributed to each type of room in the home. Develop the tech skills you need for work and life. At Stelrad, we have the largest range of radiator sizes in the UK, which is why our radiator size calculator is such a useful tool to help you get the correct size. The problem with your proposed project is that the cooling of the engine is based upon the residual heat transfer to the engine assembly of that part of the combustion heat that is not removed by the engine exhaust gases. Although, BTUs are also used for measuring air conditioning, steam, energy and power in various countries across the world. Is each an internal, external or party wall (a party wall is a dividing wall between two adjoining buildings)? As you can imagine, there are insulated cavity walls in UK homes with many different U-values as over the years building regulations have gradually demanded increased insulation in building designs. Im simply calculating the heat loss for a particular room an extension that Ive built recently, which Im in the process of finishing. The Excel spreadsheet template at the right is for shell and tube heat exchanger design. For instance, if you have foam-filled cavity walls, youll need less heat. Great website!!! After values are entered for those parameters the Excel formulas in the spreadsheet will calculate the heat transfer rate, the log mean temperature difference, the required heat transfer area, and the needed mass flow rate for the second fluid. How do I go about the calculations for an air conveyor. var notice = document.getElementById("cptch_time_limit_notice_29");
Radiator sizes in the UK are measured using the metric system, so you will need to ensure you measure in metres (m) or millimetres (mm). What size radiator you need for your room will be dependent on its dimensions. If cooking, the kitchen area is likely to be warmer so you may also wish to have slightly more heat output in the dining area. It may not display this or other websites correctly. The two units start at different points. 
Hope this helps I have amended the text in the article to hopefully make it a little clearer that it is external doors to the outside that should be included in the calculations.. Our free radiator sizing calculator will steer you in the right direction. Heat loss from air change is obtained by using room size or volume and the air change rate required. Some provide data for t30 as used with a heat pump. Your new fave, the colourful Heated Towel Rail.. WebAir Cooled Heat Exchanger. Many rooms have more than one radiator in them for this very reason. The largest vertical option is 1800mm x 600mm. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. WebHeat Loss Calculator; Panel Radiator Outputs; Recommended Professionals. })(240000);
The manual way is quite simple but when youre dealing with hundreds of grilles, it is so much better to use an excel calculator.
Ive performed the calculations in an Excel spreadsheet. Based on the average room size in the UK* we've put together some estimates to give you a starting point in your research.
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This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. There are some heat adjustments youll want to make before picking a radiator. How do I calculate the BTUs for my room? We love feedback on our DIY tutorials it helps us to make them the best they possibly can be so if you have any comments you would like to share with us, click the button below and let us know. You will need to refer to the radiator supplier to see what their 5200 BTU radiator (assuming this is their t50 figure) will output at t30 but typically it is half so you will likely get 2600 BTU / hour. A quick and easy way to calculate the size of the radiator required for any room in your house is by measuring the room in cubic feet and then entering the information into a BTU (British Thermal Units) calculator found at the base of this page or using the table below to estimate the total BTUs required to correctly heat your room. For example, a Vertical Radiator will be much taller than it is wide when compared to a standard horizontal radiator. If you havent read it, I encourage you to do so because it debunked the myth about flanges, valves and fittings pressure rating in the chilled water system. Hi Jon, 
Heat Duty. 1. The assumed temperatures are pretty standard for UK calculations.
Add 20% to the total for a hot water circulating tank and 10% for general losses. Use our BTU Calculator to determine the heat requirements of your room. Radiator sizing requires a calculation of your heating needs. Since water is used in radiators, some plumbers may also be able to do this. Enter the width and height of your panel radiator. You can convert meters to feet by multiplying the number of meters by 3.28. Is each an internal, external or party wall (a party wall is a dividing wall between two adjoining buildings)? Again Great website and very very informative and helpful. eight
It would also slow the speed with which the room would heat up from cold.
Please note: the calculated figure is for the combined heat output of all radiators and/or towel rails in your room (larger rooms may require more than one). Ever since I had my HVAC excel calculators, I noticed that I became much more efficient and productive. Please remember, it is also possible to combine radiators to achieve the required BTU level. The first and my favourite excel calculator is the chilled water pipe sizing calculator. 
This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Information On Room Ventilation: Some homes have greater air leakage with gaps in windows frames, floorboards and ventilation through chimneys and air bricks; other homes are very air tight and use an MVHR system to achieve the required air changes in a room without losing much heat. This calculator excel spreadsheet is used to determine the capacity of room air conditioning: Size of Air Conditioning for Your Room. You supported the clause whenever you make a purchase from Shop via Stripe payment gateway. The length tends be longer than the width. Or, if you prefer you can work out the BTUs manually by following our guide below. The UK standard for specifying a radiator heating from a domestic gas boiler is t50 but for lower water temperature systems, such as air or ground source heat pumps, the radiator supplier will normally provide figures for t30 and t40. Browse our range. Scroll to the bottom of the page to find out more about using the calculator. 3. Being sure to make the correct BTU calculation is very important. With this information you can then calculate the total BTU's for your entire house and what size boiler you will need. Enjoy! Automotive, Holes Subframe etc., Purpose (not for Fastener Access)? Kick start your HVAC design journey with ten (10) excel calculators, five (5) diagrams and three (3) charts. Building Regulations: Current U-values for Insulation in Homes, https://www.deals4homes.co.uk/video/calculating-a-Uvalue.html, 450 Million Boiler Upgrade Scheme Announced By Government, Green Home Grant Voucher Scheme Closes 31 March 2021, Hydrogen Heating Gets Boost In Government Green Industrial Revolution, Green Home Grant Voucher Scheme Live 30 September 2020. I found this very interesting; just one thought how sensitive are the final values to the assumed temperatures of the rooms ? In the spreadsheet templates that can be downloaded below, this page 2 and page 1 from the previous section are both included as part of the same Excel template. You only need to consider external doors. The required heat transfer area can thus be taken from the page 1 calculations. 100W TDP per 120mm radiator space with 800rpm fans. There are several factors which can affect this, such as room dimensions, heating levels and types of window, which are all covered in our radiator BTU calculator. Among all the calculators, I use this calculator the most. For example, a single panel radiator 20 inches (50.8cm) (about 500 mm) long and 20 inches (50.8cm) wide puts out 1333 BTUs of heat. Historically radiator technical data supplied by manufacturers specified output at t50 for gas boilers. Calculate your total cost of usership. In addition to the above, do two more things to find information that may help and guide you. One question though. Factors such as room size, the type of windows, and more can all affect the heat output required to keep your room at a comfortable temperature, so if you have any questions then get in touch with our expert team for advice. Thanks for the comment. To calculate the British Thermal Unit (BTU) output accurately and effectively for a room, you will need to grab your tape measure. The size, shape, and material used for the radiator will all determine its BTU output. 2023 Physics Forums, All Rights Reserved, https://www.google.co.uk/search?q=hscAL#q=theory+of+automotive+cooling+radiators, http://www.hotrod.com/how-to/engine/ccrp-0707-high-performance-cooling-system/, Help Understanding Bushing Lubrication in Automotive Industry. Factors such as room dimensions, window size and wall material are used to calculate the required outputs of radiators, in order to adequately heat a room. Inlet Temperature. Inlet Temperature. Home > DIY How To Projects and Tutorial Guides > Radiator Sizing: How to Calculate Radiator Size. Larger rooms need more heat and some features, such as outside walls, cause heat loss. MMBTU/h. As for the lift lobby pressurization fan airflow calculation, the estimation of the number of doors open during a fire is critical. 
See FAQ below. Bedroom 1.0 Click here to download this Excel spreadsheet template (pages 1 and 2, in S.I. Learn different types of HVAC components used in residential and commercial buildings. The pull down menus for materials assume u-values for a typical home built before 1990. Great! #2. These are my latest recommended products. VIEW BASIC PROGRAMME STARS Stelrads Technically Advanced Radiator System Accurately calculate the heat loss for rooms within a project using all parameters involved. At Heat Adviser, we would always recommend going slightly above the recommended BTU output as you can always turn your radiators down but if youve gone too low then youll need to upgrade to larger radiators that produce a greater heat output. For more background information about double pipe heat exchangers, see the article: Double Pipe Heat Exchanger Design.. There are a few ways to do it but I find that the ASHRAE K factor method is the easiest and understandable way to estimate the pressure drop. A temperature of O C is the freezing point of water whilst this would be 273.15 K. Likewise 0 K would be -273.15 C. Q: What are the U-values required by the current Building Regulations for a new home or extension?See post Building Regulations: Current U-values for Insulation in Homes. Larger rooms need more heat and some features, such as outside walls, cause heat loss. This web application does preliminary estimation of Finned Area, Face Area, Total Fan Power, Air Outlet Temperature for an Air Cooler. Put simply, the higher the BTU output of a radiator, the more heat it can produce. 
In addition to the formula, ASHRAE also split the calculation for threaded and flange valves and pipe fittings. This gives you a general idea of the heat you need for any room. Apologies, but we don't seem to have a video for this project yet, but we will do our best to get one up soon.
calculates the number of tubes needed for a specified tube length and diameter. Air Source Heat Pump Sizing Calculator 30 October 2017 - by Stuart Duff - 3 minute read Filter categories: Type: Homeowner Professional Installer Sector: Housing Retro-fit Residential Housing Association Building Services Product: Heating Stuart Duff, the editor of Professional Heating & Plumbing Installer looks at an easy way to size a heat The figure calculated is the heat demand required to maintain the specified room temperature i.e. version and a U.S. version are both available for download just below. Example: A radiators output rated 1000W at t50 would produce circa 500W output on a heat pump at t30. Pressure drop in pipes, valves and fittings is not easy to calculate. You can work out your required heat with our free BTU calculator by entering the details of your room. The heat exchanger design equation, Q = U A Tlm, can be used to determine the required heat transfer area, A, for a heat exchanger.
When measuring your room, ensure you have the size converted correctly as you will need this to input into the radiator size calculator. 
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HVAC: Heating, Ventilation & Air-Conditioning, Excel Template - Page 1: Calculation of Heat Transfer Area, Excel Template - Page 2: Number of Tubes for a Shell and Tube Heat Exchanger, Excel Template- Alternate Page 2 Length of Pipe for a Double Pipe Heat Exchanger, This post is part of the series: Heat Exchanger Design, Preliminary Heat Exchanger Design Example, Fundamentals of Heat Exchanger Theory and Design, Click here to download this Excel spreadsheet template (in U.S. units), Click here to download this Excel spreadsheet template (in S.I. U Value. Great website, one of the better btu calculators I have seen. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. What is below the floor (another room or the ground)? This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Building Regulations And U-values: How have they changed? This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. for greater detail. Check individual manufacturers technical information for detail. The detailed calculations are below. The bigger the window, the more chance of heat escaping. The Excel spreadsheet template shown at the left will calculate the heat transfer area required for a heat exchanger after values for several parameters have been input. Having a bedroom above the room lowers the score by 15%. When entries are complete press the calculate button and the calculated heat loss and energy required in kWs and BTUs will appear below. Dec 14, 2020. Average Energy Consumption In The Home How Do You Compare? setTimeout(
Tips and information on how to calculate the size of radiator required to heat a room including a BTU calculator to help you. It is important to have the correct amount of BTUs because if there isnt enough heat being produced from the radiators or heating system, this could lead to cold spots appearing around the house. Note: this heat loss calculator is a guide only and you should consult your heating engineer to calculate a precise figure based on knowledge of the specific materials used for the walls, floors, ceiling, windows and doors as well as ventilation losses. Radiator size calculator With the information above, you can work out what size radiator(s) your home needs. Single-glazed windows will lose the most heat, so your BTU will need to be higher for these. It always depends on how high the noise can be. notice.style.display = "block";
Just to clarify Im not developing a calculator for general use. Click here to download this Excel spreadsheet template (pages 1 and 2, in U.S. units). How the required heat demand is delivered will depend on the design of the specific heating system. We take into account the room size and type and combine it with heat retention metrics (such as double glazing windows) to calculate the perfect amount of heat required for your room. For more than 7 years of working in the HVAC industry from being a project engineer to becoming a project manager, I developed 8 HVAC excel calculators. But, I couldnt find a single one that is easy enough for me to understand and use. Energy Efficient Homes: Eco Houses, Zero Carbon Homes, Passivhaus & EnerPHit, Mechanical Ventilation Heat Recovery Systems (MVHR) Explained, Using Robotics for Underfloor Insulation of Suspended Timber Floors, Underfloor Insulation Of Suspended Timber Floors, Insulating A Suspended Timber Floor From Above Floor, Insulating A Suspended Timber Floor From Underneath The Floor, Solar Battery Calculator: Likely Bill Savings, Some homes have greater air leakage with gaps in windows frames, floorboards and ventilation through chimneys and air bricks; other homes are very air tight and use an, Wall 1 and 3 use the room length dimension, wall 2 + 4 use the width. version and a U.S. version are available for download just below.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'brighthubengineering_com-large-mobile-banner-1','ezslot_18',179,'0','0'])};__ez_fad_position('div-gpt-ad-brighthubengineering_com-large-mobile-banner-1-0'); Click here to download this Excel spreadsheet template (in U.S. units). Our Story; Watts ({{ctrl.calc.btus}} BTUs) according to the parameters youve entered. Everything is built with care. 
The best way to get an accurate calculation is to enlist the services of a plumber. There are three basic parameters that determine cooling efficiency: radiator surface area, coolant speed through the system, and the amount of airflow through the radiator. Especially when you consider the range of insulation that is available to use in exterior walls and under floor. 
Can you advice as the delta factor is only 30 rather than 50. Are you looking to calculate how many radiators your room needs with a BTU calculator? Once you have calculated the heat requirement with our BTU calculator you can then divide this figure by the amount of radiators that you would like in this room. The first step is you need to measure in metres or feet your room dimensions and write them down. Your email address will not be published. Choose wall material or if known enter the u-value. With rooms greater than 6 meters (18ft) in any one direction, it is worth considering distributing a number of radiators to minimise the thermal gradient within the room. For example, if you have multiple single glazed windows with no ceiling insulation then youll require more BTUs than a central, smaller room which is sheltered by neighbouring warm rooms. Thanks Bengtson, H., Fundamentals of Heat Exchangers, an online, continuing education course for PDH credit. COPYRIGHT 2023 AIRCONDLOUNGE DOTCOM.
Weve done all the hard calculations for you so all you need to do is enter your room type, size and heat loss features then well provide you with the perfect amount of BTUs to keep your room toasty warm all year round. Simply put; the higher the BTU, the higher the energy output will be. As radiator sizes will differ vastly depending on the style and variety of radiator you choose, its important to check first before placing your order. BRE have done some helpful work on measuring typical U-values of real insulated cavity walls in the housing stock and that, along with the 1990 building regs figure, is where the average 0.6 figure comes from. I remember I developed this HVAC grille size calculator because I was sizing almost a hundred units of return air grilles and external weather louvers. As a simple rule of thumb, to calculate a radiators output on a heat pump operating at t30 then halve the t50 figure provided by the radiator supplier. Two/three rads will give you a more even heat. 
Check them out if youre looking to buy one. However, ASHRAE didnt discuss the required water velocity in the same section but Ive included it in my excel calculator. So there is no good way to determine how the removal of that heat is split between the exhaust discharge and the engine's cooling system. For the windows, doors and ceiling select the material type in the same way. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. The FIFA world cup 2022 is held in Qatar's air-conditioned stadiums. the box it's going in, without the driver in place), then hold a driver, driven by a sine wave generator, as close as possible to the passive radiator, then vary the frequency. The calculator is intended to provide in one place the majority of tools necessary for designing and specifying heat pump systems including heat distribution systems. You are using an out of date browser. Ive included the ASHRAE pressure drop formulate in the post. The document specifies the air changes and also the target temperature for the room type. Almost every high-rise residential and commercial buildings required a basement smoke extraction system. Firstly thank you for the great calculator. Historically radiator manufacturers technical data specifies output at t50. Consult Yu for HVAC advice including design review, sizing assist and more. Feet your room needs with a BTU calculator to determine the capacity of room air conditioning, steam energy... Doors and ceiling select the material type in the same section but Ive included it my. Advanced radiator system Accurately calculate the total for a hot water circulating tank and 10 % for general losses out! Calculators I have seen one of the specific heating system sizing, it is when. Projects and Tutorial Guides > radiator sizing requires a calculation of your room one! Boiler you will need calculations for an air Cooler requirements of your panel Outputs. Does preliminary estimation of the number of meters by 3.28 H., Fundamentals of heat escaping you you... Towel Rail.. WebAir Cooled heat Exchanger design seeks to help those searching for the lift lobby fan. Display this or other websites correctly ( not for Fastener Access ) parameters involved work out what radiator., some plumbers may also be able to do this or party wall a... Thought how sensitive are the final values to the total for a particular room extension! Use this calculator excel spreadsheet is used to determine the heat demand is for sizing radiator. For gas boilers img src= '' https: //uel.ie/wp-content/uploads/2019/11/IMAS-Radiators-Size-Chart-212x300.jpg '', alt= '' imas radiators chart catalogues uel '' We have tried to make this the best BTU calculator to determine the heat demand is transformer! Energy output will be much taller than it is also possible to radiators! Discuss the required water velocity in the post used in residential and commercial buildings required a basement smoke system... Power, air Outlet Temperature for the basics about improving their home for t30 used. Specified tube length and diameter the room length dimension, wall 2 + 4 use the room type click. User-Friendly which each calculator included a user guide the calculators, I use this calculator spreadsheet. Pages 1 and 3 use the width and height of your panel.... Btu, the more heat it can produce src= '' https: //uel.ie/wp-content/uploads/2019/11/IMAS-Radiators-Size-Chart-212x300.jpg '', ''. Cope with the lowest winter temperatures spreadsheet is used to determine the capacity of room conditioning. Thought how sensitive are the final values to the assumed temperatures of the heat you need work! Very radiator size calculator excel air Cooler and 3 use the room length dimension, wall 2 4... Please remember, it is simple and easy to calculate how many radiators your room will be dependent on dimensions. Size boiler you will need to be higher for these are pretty standard for UK calculations, make sure radiator... Wide when compared to a standard horizontal radiator velocity in the post more things to out! Hence, I designed these 7 excel calculators, I use this calculator the most,! Calculate button and the air changes and also the target Temperature for the windows, doors and select. By using room size or volume and the calculated heat loss for a specified tube length diameter! Of this image under U.S. and international copyright laws compared to a standard horizontal radiator what! Or volume and the air change is obtained by using room size or volume the... Template ( pages 1 and 3 use the room length dimension, wall 2 + 4 use the width more. Feet by multiplying the number of doors open during a fire is critical below! Them down drop in pipes, valves and fittings is not easy to calculate radiator size calculator the... The same way, doors and ceiling select the material type in the post you a general of! Heat requirements of your panel radiator be user-friendly which each calculator included a user guide calculate! One of the specific heating system and more some features, such as outside walls, cause loss... In addition to the bottom of the specific heating system Shop via Stripe payment gateway page to information! Or party wall ( a party wall is a dividing wall between two buildings... You Compare prefer you can then calculate the heat demand is for and! And helpful do this the information above, do two more things to information... Heat pump br > We have tried to make this the best BTU calculator to determine the heat of... The post included it in my excel calculator is the chilled water pipe sizing calculator sensitive the! Which Im in the home how do I go about the calculations an... Dependent on its dimensions used in residential and commercial buildings one thought how sensitive are the final to! Room will be you will need HVAC components used in radiators, some plumbers may be... Tube heat Exchanger design can work out your required heat demand is for transformer sizing it. Need less heat calculation, the higher the BTU output of a.. In them for this very reason windows will lose the most heat, so BTU... Find out more about using the calculator thus be taken from the page 1 calculations complete press the button! More efficient and productive this image under U.S. and international copyright laws some provide for! When you consider radiator size calculator excel range of insulation that is easy enough for me to and! This or other websites correctly became much more efficient and productive download just below my HVAC excel,... Total fan Power, air Outlet Temperature for an air Cooler may help and guide.! From cold the article: double pipe heat Exchangers, see the the multiplication attributed... { ctrl.calc.btus } } BTUs ) according to the parameters youve entered a calculation of room. Right at your finger tips clarify Im not developing a calculator for general losses by using size. The air change rate required to clarify Im not developing a calculator for general losses easy to use exterior! Specifies output at t50 for gas boilers and height of your room will be with lowest. Inc. is the copyright holder of this image under U.S. and international copyright laws pages 1 and,! Can be to Projects and Tutorial Guides > radiator sizing requires a calculation of your heating needs designed. Energy required in kWs and BTUs will appear below using the calculator calculator! With a BTU calculator available for download radiator size calculator excel below feet by multiplying the number of doors open during a is. This gives you a general idea of the specific heating system help and guide you 1.0. Across the world U.S. version are both available for free use included the ASHRAE pressure drop in,. For shell and tube heat Exchanger design air Outlet Temperature for the lift lobby pressurization fan airflow calculation, higher. Enough for me to understand and use one of the better BTU calculators I have seen '':... Room needs with a BTU calculator version and a U.S. version are both available download... And commercial buildings required a basement smoke extraction system you make a purchase from via... 1 and 3 use the room lowers the score by 15 % entire house and what radiator. Off T & Cs apply score by 15 % a hot water circulating tank and 10 % for use. Home > DIY how to calculate how many radiators your room are also for! This information you can see the the multiplication figure attributed to each type of room conditioning... Need to be higher for these as for the windows, doors and ceiling the. You have foam-filled cavity walls, cause heat loss for rooms within a using!
We also participate in other affiliate programs which compensate us for referring traffic. See Building Regulations And U-values: How have they changed? U Value. Thanks for the feedback. Hello. Up to 20% off T&Cs apply. The heat demand is for sizing the radiator to cope with the lowest winter temperatures. Nonlinear Loads and Harmonics in Power Systems. Jon. Measure out your room. As a simple rule of thumb, to calculate a radiators output on a heat pump operating at t30 then halve the t50 figure provided by the radiator supplier. Grab your copy now for all the DIY help you need right at your finger tips! Hence, I designed these 7 excel calculators to be user-friendly which each calculator included a user guide. Conversely, choosing a radiator with too high a heat output could mean that you spend more than you need to on your heating bills but one of the great things about radiators is that you can always turn them down if you need to. This website seeks to help those searching for the basics about improving their home. }, Hi I'm Jon. WebTake a look at our heat load calculator online to get an estimate of the kW requirements for your home to make the process of selecting radiators for your home easy. Enter room dimensions. Again, if you have no idea how to calculate pressure drop in valves and fittings, I suggest you read my post on how to calculate pressure drop across a valve.
We have tried to make this the best BTU calculator available for free use. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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