03152 Acceptance test for air conditioning systems. Performance acceptance test of cooling surfaces for rooms

13

Space heating and cooling

This forms a mixture of the pre-ceramic polymer and interface materialcoated reinforcing fibres. moulding an exhaust manifold-shaped structure from the mixture by placing the mixture on at least a portion of the castahle material, and firing the structure. The manifolds produced are resistant to erosion, minor impacts, and thermal shock.

97/03154

97103155 Melting mechanism 97103147 along axis of coal-oxygen flame

of gunning

mixture

particles

Gangtie, 1996, 31, (S), 21-24. 56. (In Chinese) Wang. X. and Li, H. In order to study the effect of gunning distance and particle size on the melting of refractory particles, a temperature model was developed. The model is useful for selection of gunning distance and particle size for the repair of refractory brick wall in metal smelting furnaces.

97103148 ammonia

Refractories installations

for

the

lining

of

large

Air conditioning

applications

and design

Jones, W. P. Arnold, London, 1997, 384~~. The student and practising engineer are the intended readers of this second edition, which focuses on system design and application.

Air conditioning

installations

compared

Capozzi, R. Condiz. dell ‘Ario, December 1996. (12), 1370-137X. An air conditioning and heating plant with traditional hydraulic distribution is economically compared with one comprising a central chiller plus hot water boiler and distribution hv fan coils.

97103156 evaporators

Air

conditioning

technology-shell

and

tube

Creamer M. Air Condit. R&g. New. January 1997. 13. (4). I’)-20. Comfort and close-control air conditioning applications are pre\rntcd.

synthetic

Hu, B. Naihuo Cailiao, 1996, 30, (4) 234-238. (In Chinese) The refractories used in lining of large synthetic ammonia installations are discussed. The topics include the technical principle, choice of furnace type and lining refractories of large synthetic ammonia installations imported from abroad using natural gas, residual oil and coal as raw materials and the progress of home-made refractories for gasifiers and their wear mechanism.

97103157 chillers

Air conditioning

technology.

Shell and tube water

Creamer, M. Air Condit. Rcfrig. News, February lY97, 13. (5), 20-23. Details are provided on shell and tube water chillers and other water chiller evaporators. 97103158

Calculating

chiller

emissions

and

source

energy

use A regenerable sorbent 97103149 for H.$S removal from hot gas

injection/filtration

process

Higgins, R. J. ef al. Proc, Annu. Int. Pirtshrrrgh Coal Conf:. 1996, 13, (2). 1272-1277. A bench-scale transport reactor was used to study the operational characteristics of a hot gas desulfurization process involving regenerable sorbent injection and its subsequent collection with a ceramic filtration device. Hydrogen sulfide removal from simulated hot gas was evaluated as a function of both zinc oxide-based sorbent physical and chemical characteristics and various process parameters. In addition, the sorbent capture efficiency and regenerability of the ceramic filtration device were evaluated, and regeneration of sulfided sorbents via injection into an oxidizing gas was studied. The ceramic filtration devices captured 100% of all sorbent particles and were fully regenerable over periods of several tens of injectionibackpulse cleaning cycles.

Use of brown-coal 97103150 ceramic production

fly ash for glass

and

glass-

Nocun. M. and Pytel, 2. Pr. Kom. Nauk Ceram., Ceram. (Pal. Akad. Nauk). 1994, 46, 399-402. (In Polish) The results of this study show brown coal fly ash can be used as a raw material for manufacture of glass and glass ceramics.

Zeolite 97lO3151 from clay minerals

adsorbents

of modified

porous

structure

Drag, E. B. Pr. Konl. Nauk Ceram., Ceram., 1994, 46, (Biomaterialy. Materialy w Ochronie Zdrowia i Srodowiska), 243-248. (In Polish) Prior to the zeolite 4A synthesis, cellulose, colloidal silica, alumina, coal, and brown coal texture modifiers were added to clay minerals to induce a change in the texture. The efficiency of zeolite synthesis was improved with this method and the number of transport pores and sorption capacity increased.

13

SPACE HEATING COOLING

97103152 Performance

Acceptance acceptance

AND

test for air conditioning systems. test of cooling surfaces for rooms

air cooling-a

re-discovered

humidifica-

Socher, H. J. Technik am Bau, November 1996, 11, 59-63. In order to conserve primary energy, adiabatic air humidification is being used increasingly in air conditioning. Issues concerning health-related and economic aspects of adiabatic humidification and humidification techniques are discussed. The different types of adiabatic humidifier are presented, providing details of their advantages and disadvantages. The hybrid humidifier, based on combined atomization and evaporation, which overcomes the drawbacks of conventional adiabatic humidifiers is discussed in detail.

259

Fuel and Energy Abstracts

July 1997

97103159

reciprocating

Capacity chillers

comparisons and operating with R407C and R22

experience

of

Hartmann, K. Ki Luft. Klimatech.. November 1996, 32, (I I), 50%514.(In German) Despite having similar characteristics, the zeotrope refrigerant R107C is not suitable as a straightforward drop-in replacement for R22. For trouble-free compressor performance, the differing aolubility of the refrigerant into synthetic has to taken into account and at start-up the oil pump has to handle increased demand. Difference in heat transfer are witnessed through precise measurements, where better performance is seen in plate heat exchangers than in plate tin coils and shell and tube exchangers. Several heat exchanger configurations and numerous lahoratorg te\ts results show that expressing capacity changes in general percentage terms is not useful and that simply changing the refrigerant in RI2 systems results in an inferior coefficient of performance.

97103160 A case various fuels

study

of

compact

cogeneration

using

Silveira, J. L. ef ul. Fuel, 1997, 76, (5) 447-451. The paper introduces a method for studying the technical and economic feasibility of absorption refrigeration systems in compact cogenerators. An internal combustion engine, an electric generator and a heat exchanger to recover residual heat from the refrigeration water and exhaust gases form the basis of the system. A computer simulation of the cogeneration system in a building which already has 75kW of installed electric power was developed. System performance is simulated utilizing diesel oil. sugar cane alcohol and natural gas as possible fuels. 97103161 CCI market review-condensing units Anon Clima. Comm. Internut., 30 September 1996, 30, (1 l), 22,24,26. (In German) Information is given concerning condensing units available on the German market.

Chilled ceiling control 97103162 Anon Facilities Management Guide, February 1997, (14). 12-1.

Germany VDI Standards VDI 2079 Supplement, 1996, 15pp. (In English/ German) The performance acceptance testing of built-in room cooling surfaces (chilled ceilings) is addressed in this supplement. The performance test of cooling surface elements is carried out in accordance with DIN 4715-I on special test stands by approved test bodies (type testing).

Adiabatic 97103153 tion technique?

Aumann, D. J. ASHRAE Tra?~arlv., 1996, 102. Part. 2, SA-96-I I-?. 649-662. A manual calculation method for estimating the combustion-related emissions and source energy use of gas and electric chillers is detailed.

The primary objective of the operation of water-fed chilled ceilings is to coordinate the operation of the chilled ceiling, ventilation and heating systems. without allowing condensation to form on the ceiling or in the ceiling void as a result of excess humidity in the air. The author raises important questions to consider when designing the room controls. Methods of controlling the cooling output of the chilled ceiling are addressed.

97103163

Chilled water cassettes

Anon Clint, Chuff. Con., November 1996, no.9, 67. Describes chilled water cassette air conditioners marketed

in France.

97103164 Coils, coolers and condensers Anon Air Condit. Refrig. News, December 1996, 13, (3), 28-30,32,34. Details are given of those available in the UK.

97103165 A comparative study of elliptical and circular sections in one- and two-row tubes and plate fin heat exchangers Rocha, L. A. 0. et al. Int. J. Heat and Fluid Fiou~, 1997, IS, (2). 247-252. This paper presents a two-dimensional (2-D) heat transfer analysis performed in one- and two-row tubes and plate fin heat exchangers, The temperature distribution on the fin and air free stream. and the fin