This paper simply introduced a pipe measure heat allocation meter that has very superior competitvie price,also with regard to the use procedure of evaporated liquid processed in an analyzing experiment of the quantity of evaporation, pointed out its influence on the accuracy of heat meter measurement.

The electric heat allocator is adequate heat metering instrument to the centralized heat-supply in our country.

The evaporating-condensing electric calorimeter is a vital component in the synthesis experimental bench for thermodynamics, in order to lower it s manufacture price, request the minimum cubic content and material cost meet the structural constraint and performance constraint, the genetic algorithm is employed to solve the problem.

The analysis for heat cost allocators based on evaporation principle to apply in country;