I needed to estimate the heating and cooling loads for my church's worship space. Commercial programs work OK and are expandable, but they're not free. Free programs are OK as far as they go, but they're not expandable. I made separate sheets for gain and for loss so that I could keep them open together and run the results independently.
Feel free to set them up as you desire. See notes on infiltration below. Look at sources on the web for other construction types. General values will be fine for estimating. Simplifying assumptions I made simplifying assumptions, but they do not limit the usability -- you can make yours more complex by adding elements and estimating added losses and gains.
The examples are for a 2, sq. It has five 3' x 4' windows on each outside wall and four 2' x 4' skylights in the ceilings. Pretty basic newer US smaller house. Floors -- The examples assume that a crawl space, if any, is at the same temperature as the outside air, which makes calculations easy, but may not be accurate. If the floor is slab-on-grade, then it's R value will range from a low of 1 with no underlying insulation, to perhaps 8.
If the main floor is over a basement which is a heat-sink , then the temperature differential will obviously be the difference between the temp of the main-floor room and the temp of the basement.
The slab floor element is in the top section of factors independent of outside air temperature, because soil temps are relatively constant year-round within about 10 degrees or so.
The floor over crawl space is in the bottom section of factors that depend on outside air temp. Orders with Free Ground Shipping also qualify! More details. Calculating a heat load is necessary before the installation of a radiant heating system can begin, since different types of radiant heating systems have different BTU output values.
A typical heat load calculation consists of surface heat loss calculation and heat loss due to air infiltration. Use the sum of all windows if there are more than one. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. However, you may visit "Cookie Settings" to provide a controlled consent. Cookie Settings Accept All. Manage consent. Close Privacy Overview This website uses cookies to improve your experience while you navigate through the website.
Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent.
You also have the option to opt-out of these cookies. She also writes a biweekly newspaper column, "Design Dilemmas," in the "Lakeshore News" and has been published in "Design and Drapery Pro" magazine. Erlam is a graduate of the Sheffield School of Interior Design and is a practicing interior decorator and drapery workroom operator. By Linda Erlam. Related Articles. Financing for Replacement Windows.
Wood and coal are excluded from these calculations because the heat production of these fuels is not consistent.
0コメント