Heat source machine

Abstract

A heat source machine includes: a first emission amount calculation unit 12 which calculates a first carbon dioxide emission amount that is an amount of carbon dioxide emitted to obtain an energy source consumed in a hot-water supply operation; a second emission amount calculation unit 13 which calculates a second carbon dioxide emission amount that is an amount of carbon dioxide emitted to obtain an energy source consumed in a reference heat source machine on an assumption that the reference heat source machine performs the same operation as the hot-water supply operation; and a carbon dioxide emission reduction degree display unit 14 which displays a carbon dioxide emission reduction degree that results from changing to the current heat source machine, according to a difference between the first carbon dioxide emission amount and the second carbon dioxide emission amount.

1 . A heat source machine which performs a heating operation of heating water to be heated by a heating unit, the heat source machine comprising:
 a comparison target input unit which inputs specifications of a reference heat source machine as a comparison target;   a first emission amount calculation unit which calculates a first carbon dioxide emission amount, the first carbon dioxide emission amount being an amount of carbon dioxide emitted to obtain energy consumed in the case of performing the heating operation;   a second emission amount calculation unit which calculates a second carbon dioxide emission amount, the second carbon dioxide emission amount being an assumed amount of carbon dioxide emitted to obtain energy consumed in the reference heat source machine on an assumption that the reference heat source machine performs the same operation as the heating operation; and   a carbon dioxide emission reduction degree display unit which displays a carbon dioxide emission reduction degree that results from changing to the heat source machine, according to a difference between the first carbon dioxide emission amount and the second carbon dioxide emission amount.   
     
     
         2 . The heat source machine according to  claim 1 , wherein the comparison target input unit is capable of inputting, as the specifications of the reference heat source machine as the comparison target, at least one of an electric water heater, an oil heat source machine, a gas heat source machine using natural gas, and a gas heat source machine using liquefied petroleum gas. 
     
     
         3 . The heat source machine according to  claim 1 , wherein the heating unit includes: a burner; a main heat exchanger which mainly absorbs sensible heat from exhaust gas of the burner and performs heat transfer; and an auxiliary heat exchanger which mainly absorbs latent heat from the exhaust gas of the burner and performs heat transfer, and
 wherein the comparison target input unit is capable of inputting, as the specifications of the reference heat source machine as the comparison target, a heat source machine including only a burner and a heat exchanger which mainly absorbs sensible heat from exhaust gas of the burner and performs heat transfer.   
     
     
         4 . The heat source machine according to  claim 1 , wherein the heating unit includes: a first heating unit which performs a hot-water supply operation of supplying hot water to a hot-water supply pipe, as the heating operation; and a second heating unit which performs a room heating operation of supplying hot water to a room heating circuit, as the heating operation,
 wherein the first emission amount calculation unit separately calculates the first carbon dioxide emission amount in the case of performing the hot-water supply operation and the first carbon dioxide emission amount in the case of performing the room heating operation,   wherein the second emission amount calculation unit separately calculates the second carbon dioxide emission amount in the case of performing the hot-water supply operation and the second carbon dioxide emission amount in the case of performing the room heating operation, and   wherein the carbon dioxide emission reduction degree display unit separately calculates and displays the carbon dioxide emission reduction degree that results from changing to the heat source machine in the case of performing the hot-water supply operation and the carbon dioxide emission reduction degree that results from changing to the heat source machine in the case of performing the room heating operation.