建筑環(huán)境與設(shè)備工程專業(yè)英語(yǔ)-資料下載頁(yè)
2025-01-13 22:59本頁(yè)面
【正文】 s within the system. Each irreversibility requires additional power into the pressor. It is useful to understand how these irreversibilities are distributed throughout a real system。 this insight can be useful when design changes are contemplated or operating conditions are modified. ABSORPTION REFRIGERATION CYCLES An absorption cycle is a heatactivated thermal cycle. It exchanges only thermal energy with its surroundings。 no appreciable mechanical energy is exchanged. Furthermore, no appreciable conversion of heat to work or work to heat occurs in the cycle. Absorption cycles are used in applications where one or more of the exchanges of heat with the surroundings is the useful product (., refrigeration, air conditioning, and heat pumping). The two great advantages of this type of cycle in parison to other cycles with similar product are ? No large, rotating mechanical equipment is required ? Any source of heat can be used, including lowtemperature sources (., waste heat) Some idea on How to prepare the teaching material for this class ? Divide the content into two levels for the two semester. ? The level one for the 1st semester should focuses on those material that can give students an overview of the field or major ? The level two is supposed to discuss some details on specific topics which allow the students access to advanced technical aspects. ? Therefore, a teaching note or textbook may be prepared according to the consideration of two levels and appropriate materials should be selected carefully and prudently.
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