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DAVID A. SELLERS, PE : HPAC :
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Ray W. Moore, PE CPD : Plumbing Systems & Design :
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Roy C.E. Ahlgren : Plumbing Systems & Design :
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John Siegenthaler, PE :
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Deng Shiming and Jiang Yiqiang : ASHRAE Journal :
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. . . . . . B . . . . . . . . References 1. Herbas, T. B., E. A. Dalvi, and J. A. Parise.1990. “Heat recovery from refrigeration plant: Meeting load and temperature International Journal of require-ments.” 13: 264– 269. Refrigera-tion, 2. Tan, K. X. and S. M. Deng. 2001. “Desuperheater heat recovery hot water systems in subtropics: Using water heat-ing towers to extract heat from ambient air cool-ing as heat source.” ASHRAE Transactions 107( 2): 608– 612. 3. Deng, S. M. 2002. “Sizing replacement chiller plants.” ASHRAE Journal 44( 6): 47– 49.
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5. Most systems in hotels, motels, and dormitories allow individual operation, including this type of control. 7. Publishes the Building Life-Cycle Cost Program (BLCC). 9. The most efficient systems for hotels, motels, and dormitories are generally this type of heat pumps or air source heat pumps. 13. These types of sensors are used to conserve energy by resetting the temperature control when the room is occupied or when the guests leave. 15. This type of hotel has extensive public areas, numerous special and sport areas, several restaurants, and has an average of 1.9 to 2.4 people/guest room. 20. Packaged terminal air conditioners (throughthe- wall units) that do not allow simultaneous heating or cooling.
Answer
ACROSS 1. This type of hotel has no public areas, little or no dining, usually no laundry, and has an average occupancy of 1.6 to 1.8 people/guest room. 6. This portion of the heating/cooling load in high-rise hotels without ventilation openings for perimeter units, are not controllable yearround by general building pressurization. 8. This type of water is in relatively high demand in a hotel, motel, and dormitory for periods of an hour or two several times a day. 10. To avoid adding any load to the individual room systems, this air should be treated to conform to indoor air temperature and humidity conditions. 11. Along with the public areas, this is the other room type that is a main area of use in a hotel, motel, and dormitory. 12. Along with first cost and economical operation, this is another consideration that needs to be taken into account when selecting a particular system for a hotel, motel, or dormitory. 14. Providing this type of ventilation air directly to the guest room is the preferred approach.
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16. Ideally, each room in a hotel, motel and dormitory is cooled, heated, dehumidified, and _______ independently of any other room. 17. This type of heat recovery device may be merited for facilities that use exhaust and supply air on a 24-hr basis. 18. This type of hotel has larger rooms, gaming spaces, extensive entertainment facilities, numerous restaurants, and an average of 1.5 to 1.6 people/guest room. 19. This cooling and heating load is dominant because the guest rooms normally have exterior exposures. 21. The quantity of outdoor air introduced into the occupied rooms or corridors in a hotel, motel, or dormitory is usually slightly in excess of this air quantity in order to pressurize the building.
DOWN 2. A source of this comes from transferring between guest rooms through the toilet exhaust ducts. 3. This type of hotel has large rooms, suites, and specialty restaurants, and it has an average of 1.2 people/ guest room. 4. This type of system does not allow simultaneous cooling and heating.
Plumbing Systems & Design :
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. )( )R( 0 - Btu i n ( )0.028-0.032 m2.( oC/W). mm( 4.4.6ft2.h.(oF/Btu). . ) oC( oF )0.028 m2.( oC/W). mm( 4.0ft2.h.(oF/Btu). in R 4ft2.h.(oF/Btu). in . (0.032 m2.(oC/W).mm) )oF/Btu( in ) (0.032 m2.(oC/W).mm 6ft2.h. : ) × ( ( : R R ) × . (4.0 ft2. h. ) (oF/Btu).in) : ) × ( ( : R R ) × . . . . References 1. American Society of Plumbing Engineers, “Data Book” Volume 2 (2000), Chapter 5, Cold- Water Systems. Continuing Education: Recirculating Domestic Hot Water Systems
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