REPLACING FOSSIL FUELS BY GEOTHERMAL DISTRICT HEATING - EXAMPLE FROM ICELAND
Geothermal district heating has played a major part in the Icelands transition from a developing country to a modern society. The first geothermal district heating systems were taken into operation around 1930. The technology used today is still based on the simple and robust solutions developed at that time. Locally manufactured equipment was used to a high degree. Good economics are based on large heat building radiators and low building return water temperature. The distribution system investment cost is kept down by ensuring high temperature differences between the supply and return water(40°C). The supply temperature is governed by the temperature of the geothermal field, but correct building system design can ensure this temperature difference by low return temperature from the building. A geothermal district heating system should be seen as a chain beginning in the geothermal field and ending in the living room of the consumer. If no link in this chain is weak, large oil savings and great improvement in the quality of life can be obtained by geothermal district heating.
Pall Valdimarsson
University of Iceland Hjardarhagi 2 IS-107 Reykjavik and Enex ehf. Skulagata 19 IS-101 Reykjavik ICELAND
国际会议
Workshop for Decision Makers on Direct Heating Use of Geothermal Resources in Asia(亚洲地热资源直接利用国际研讨会)
天津
英文
69-74
2008-05-11（万方平台首次上网日期，不代表论文的发表时间）