Calculation of Heating and Cooling Loads – Term Paper Example

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The paper "Calculation of Heating and Cooling Loads" is a great example of a term paper on technology. The paper covers the heating and cooling loads experienced in a building or a surface. The three modes of heat transfer and understanding of solar geometry are of significant understanding. Heating and cooling loads are important in the selection of air ventilation and conditioning system. The paper covers the heat gain into a building, heat that is transmitted through the elements of the building, and the heat that is required to warm the air from the outdoor entering the building or space. The solar system comprising the sun, the planets, and the stars, where the sun is the only source of light and heating as far as heating and cooling loads are concerned is also covered.

Lambert’ s cosine law describes the amount of solar radiation received on the surface of the earth at any one point, and from the above equation/ law, a point will receive maximum solar radiation when the sun is at its overhead. Windows are important building elements. The location and design of a window are of critical significance as pertains to cooling or heating in a building.

Their design is not mostly for beauty purposes and particularly in polar and temperate regions where there are intense low and high day temperatures respectively. INTRODUCTION Heat transfer is a process through which heat is transferred from one system to another. In heat transfer, the net heat transfer is from the hotter body to the less hot body and an equilibrium is reached when the two adjacent bodies are at the same temperature. Knowledge of heat transfer is very important in determining the type of material, sizes, and shapes to use in the construction of houses or thermal systems.

In this case, passive thermal systems will require materials of poor thermal capacity or conductivity while active systems will demand material fabric that is of high thermal capacity. Cooling load refers to the rate at which heat is removed from space so as to attain some desired temperatures or relative humidity within that space. Heat gain into a building should be analyzed first before the cooling load is determined because cooling loads are usually calculated when determining the ventilation, HVAC air conditioning systems, and components, and when sizing up heating into a building. Heating load on the other hand involves calculations that are made to determine the heating load of a given building.

Loss of heat from a building is of two kinds as listed below; The heat is transmitted through the elements of the building like the ceiling, walls, floor, windows, and other exposed surfaces. The heat is required to warm the air from the outdoor entering the building or space. The purpose of any building is to ensure safety and comfort to its occupants for a healthy living.

This function is achieved through proper design and building material selection to enable it to respond as required to climate change. The thermal exchange takes place when the different elements of the building are exposed to external varying conditions. The exchange can be through conduction, convection, or radiation as determined by how the structure interacts with its environment. The material used for building determines the thermal nature of the building as thermal conductivity is an intrinsic property of any material.

Various forms of heat transfer processes take place in a building, mostly heat transfer occurs in areas like, roofs, through the walls, floor, and ceiling.

References

DOWN, P. G. (1969). Heating and cooling load calculations. Oxford, Pergamon Press. https://ezproxy.saskpolytech.ca/login?url=http://site.ebrary.com/lib/siastlibraries/Doc?id=10999804.

BURDICK, A. (2011). Strategy guideline accurate heating and cooling load calculations. [Washington, D.C.], U.S. Dept. of Energy, Energy Efficiency & Renewable Energy, Building Technologies Program. http://purl.fdlp.gov/GPO/gpo9723.

AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING ENGINEERS, RUDOY, W., & CUBA, J. F. (1979). Cooling and heating load calculation manual. New York, ASHRAE.

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