ISSN:0363-907X    

DOI:10.1002/er.4440020102

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1978

数据来源: WILEY

摘要:

AbstractA case is presented for three different approaches to solving the shortage of oil in the United States of America; conservation, solar energy and nuclear energy. the politics involved in the three approaches are reviewed.

ISSN:0363-907X    

DOI:10.1002/er.4440020103

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1978

数据来源: WILEY

摘要:

AbstractThe concept of remote solar plant giving piped hydrogen fuel is gaining strength with the likelihood of realization. Electricity (in 1977 U.S. $) for use in electrolysis with a 50 per cent load factor at the producing plant would be 1 cent/kWh now, and 1.5 cents (still 1977$) in 1985. Potential will be 1.5 V. Cost of 1 MBTU will be in the region of $5 (electrolysis). Photovoltaic electricity using Fresnel concentration and heat exchangers should cost 1 cent/kWh. H2transport costs should be some 1 mill/1000 km. Examination of ten approaches gives a maximum hydrogen cost of $9/MBTU, a likely value of $5, and speculative laboratory possibilities which could give $1/MBTU.

ISSN:0363-907X    

DOI:10.1002/er.4440020104

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1978

数据来源: WILEY

摘要:

AbstractMost analyses of the potential for combined heat and power (CHP) in parallel with a central electricity generating industry value the electrical output by means of an assessment of the marginal benefit to the central supply of units and capacity provided by the local system. This approach has defects, especially when applied to a growing system with a choice of investments. This paper suggests an alternative approach without these defects. It concludes that CHP is extremely attractive if load factors on the local plant are high, as in industry. This conclusion is insensitive to future costs of fuel and plant. If there were enough sites of this nature then there would be no case for CHP from district heating loads. If, however, high‐load‐factor sites are not available then CHP from district heating could be a second best alternative. the paper investigates this hypothesis and concludes that this may be so, but that in this case the answer is very sensitive to future costs of fuel and pl

ISSN:0363-907X    

DOI:10.1002/er.4440020105

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1978

数据来源: WILEY

摘要:

AbstractSodium thiosulphate pentahydrate and sodium sulphate decahydrate show appreciable potential differences and currents when the solid phase is in contact with its molten phase. the studies offer a new method for converting solar energy into electrical power.

ISSN:0363-907X    

DOI:10.1002/er.4440020106

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1978

数据来源: WILEY

摘要:

AbstractWeather data giving annual temperature distributions, extremes, humidity, solar radiation, and temperature swings are presented, which may be used as a basis for estimating power requirements and running costs for proposed or existing heating and cooling systems.Conventional heating and cooling power calculations are summarized, with particular reference to anomalies and discrepancies. the need for further work on incidental gains, on the comfort tolerance zone, and on calculations of system capacity is highlighted.

ISSN:0363-907X    

DOI:10.1002/er.4440020107

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1978

数据来源: WILEY

摘要:

AbstractThe structure, inputs, validation and operation of a residential energy use model are examined with the intention of providing an analytical tool for evaluation of energy conservation option for effects on energy use and related costs.

ISSN:0363-907X    

DOI:10.1002/er.4440020108

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1978

数据来源: WILEY

摘要:

AbstractSome methods are discussed for detecting the formation of ice on the evaporators of air‐source heat pumps and air coolers by electronic means. the sensing of thermal resistance caused by ice build‐up can be done by measuring temperature differences between the evaporator and the air, and analyses are presented of the effect of using both linear and non‐linear temperature sensors for this purpose. the direct detection of the presence of ice can be done by measuring the capacitance of a suitably‐placed pair of plates, and the performance of such a system is analysed. Preliminary reports are presented of the use of both of these methods of ice detection in the defrosting of an experimental he

ISSN:0363-907X    

DOI:10.1002/er.4440020109

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1978

数据来源: WILEY

ISSN:0363-907X    

DOI:10.1002/er.4440020110

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1978

数据来源: WILEY

ISSN:0363-907X    

DOI:10.1002/er.4440020111

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1978

数据来源: WILEY