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Present-day world energy policy is based on two main directions: energy efficiency and environmental protection. Efficient Combined Heat and Power production is one of the energy consumption effective methods, where CHP production from the renewable fuels is preferable. [1] In order to plan for the most economical, technical and environmental optimal CHP system, it is especially important to estimate the expected heat demands and heat load profiles for the district heating area. This paper describes a method for estimation of heat load profile for a given district heating area by dividing it to three different heat load types: • Temperature depended heat load; • Constant heat load; • User defined heat load. The paper provides a complete description of above mentioned heat load types, equations as well as calculation examples. Calculation results are compared to hourly measured heat loads to estimate accuracy of a proposed model.

Heat load model for small-scale CHP planning