Chapter 13, Problem 1RQ

Which of the following would not increase the rate of heat transferred from a heater pipe? A.  Insulating with materials whose thickness is below that of critical thickness for insulation. B.  Blowing air over it C.  Providing fins D.  Placing the heater pipe within another whose thermal conductivity is smaller in number and 2 inches thick

Which list states the correct order of components for the absorption refrigeration? A) Evaporator, then absorber, then concentrator, then condenser. B) Absorber, then condenser, then evaporator, then concentrator. C) Condenser, then absorber, then concentrator, then evaporator.

Which application of geothermal energy requires the highest temperature? Please choice one below;  Process heating Greenhouse Space heating Electricity generation Space cooling

Which is the most accurate description of one of the system's processes? A Fluid moves from the secondary pipes into the ground. B Fluid moves from the primary pipe into the building. Fluids circulate separately inside both pipes. D Fluid moves from the secondary pipe through the heat exchanger to the primary pipe.

1. An air-source heat pump is a heat-pump system that uses air: a. as the system refrigerant. b. as the heat source when operating in the cooling mode. c. as the heat sink when operating in the heating mode. d. as the heat source when operating in the heating mode.   2. According to the Department of Energy, duct leakage can result in a energy loss? a. 10% b. 20% c. 30% d. 40%   3. As the outside ambient temperature drops, the efficiency of a heat-pump system operating in the mode will: a. heating, drop b. heating, rise c. cooling, rise d. Both a and c are correct.

A typical room air-conditioning unit has _____(one or two) fan motors.

What are the advantages of using refrigerated air-conditioning rather than evaporative conditioning?

BOOK -  Heating Ventilating and Air-Conditioning Analysis and Design

Which are the components of a solar power tower? O a. Parabolic dish, Stirling engine, generator O b. Heliostats, receiver, heat exchanger, turbine, generator Solar panel, inverter, batter, charge controller O c. O d. Flat plate collector, tank, pipes, pump