ABSTRACT
We will consider here the issues associated with establishing the available heat for applications that will either directly use the heat, so called direct use applications (discussed in detail in Chapter 11) or will use the heat to generate power (Chapter 9). We will not consider resource assessments for ground source heat pump applications (Chapter 10) since the heat available for their deployment exists everywhere: The most significant challenge for their economic viability is the local geothermal gradient, drilling costs, and competition with other energy sources and is not directly a function of the availability of heat.
