In November 2006 a "CO_2 emission and energy saving potential through correct pipe insulation of space heating and domestic hot water distribution systems in the new and existing buildings." paper [3]. sponsored by Armacell - worldwide producer of flexible pipe insulation products, was presented at the EPIC 2006 AIVC conference in Lyon and published in its Proceeding Acts. The aim of the study was to answer how much energy and CO, emission can be saved with optimal pipe insulation installed on space heating and domestic hot water distribution pipelines in the new building. It revealed the saving potential of CO_2 emission is some 3,1 kg/(m~2·a) ～ 500 kg/a for a 160 m~2 single family house. This paper is a continuation of the previous one but with the question on saving potential of pipe insulation applied in air-conditioning chilled water systems. The saving potential of CO_2 emission from a 1.800 m~2 commercial store due to application of the optimal pipe insulation thickness (20 ÷ 30 mm) is the same as CO_2 emission from a 160 m~2 single family house.
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