Providing a web site featuring temporary use of non-downloadable software to calculate the length of a heat exchanger in the earth and equipment operating cost using databases for climate conditions, equipment performance parameters, soil parameters, and other parameters that users select in the field of building heating and cooling systems

'build':48 'calcul':14 'climat':31 'condit':32 'cool':51 'cost':27 'databas':29 'download':11 'earth':23 'equip':25,33 'exchang':20 'featur':5 'field':46 'heat':19,49 'length':16 'non':10 'non-download':9 'oper':26 'paramet':35,37,40 'perform':34 'provid':1 'select':43 'site':4 'softwar':12 'soil':36 'system':52 'temporari':6 'use':7,28 'user':42 'web':3

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