EBK FUNDAMENTALS OF THERMODYNAMICS, ENH
EBK FUNDAMENTALS OF THERMODYNAMICS, ENH
9th Edition
ISBN: 9781119321453
Author: Sonntag
Publisher: JOHN WILEY+SONS,INC.-CONSIGNMENT
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Chapter 5, Problem 5.18P
To determine

Rate of cooling and COP of the window air conditioner.

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.11 The refrigerator (R) shown in Fig. F3.i! is a closed syster: thet oper- ates in cycles while in communication with the cold space (T;) and the building (T). The refrigeration load (QL) reaches the cold space by leak- ing from T to T across the thermal insulation system (I), which is a closed system operating steadily. If the work required by the refrigera- tor is WR, what is the net heat transferred by systems (R) and (I) to the building (Tg)? The net heat transferred by (R) and (I) to the building (QR) is removed by a heat pump (HP) that functions cyclically as a closed system. The heat pump requires the work WHp and rejects heat to the ambient of temperature T, which is warmer than the building. Together, the closed systems (R), (I), (B), and (HP) perform the function of removing the refrigeration load Q, by rejecting heat to the ambient T. T (В) Тв (HP) E WHP WR (R) (I) TL Te, Figure P3.11 38 ENTROPY GENERATION, OR EXERGY DESTRUCTION The total work requirement is WR + WHP, and…
150 kJ of work is done in a rigid container while the internal energy increases by 95 kJ. Find the heat transfer, in kJ.
Suppose 400 kW of power potential is wasted during the process as a result of irreversibility. Let say the heat pump received heat at a rate of 1000 kJ/s from a heat source. The reversible power of the present process is found to be 800 kW. Find unavailable heat, which is rejected to the sink.
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