The adjustments to convert net income to cash flow from operations generally. involve (1) adding the amount by which an expense exceeds the related cash expenditure for the period (for deprecia-. tion, the entire amount), (2) subtracting the amount by which a revenue exceeds the related cash receipt for the period.
Gas Furnaces: Cracked Heat Exchangers. The most common reason for a natural gas furnace to leak carbon monoxide is from a crack in the heat exchanger. The heat exchanger is the metal wall or tubing that is heated up when the burners are ignited.
Thermal Pollution. During the electricity-generation process, burning fossil fuels produce heat energy, some of which is used to generate electricity. Because the process is inefficient, much of the heat is released to the atmosphere or to water that is used as a coolant.arbon monoxide is a gas formed as a by-product during the incomplete combustion of all fossil fuels. Exposure to carbon monoxide can cause headaches and place additional stress on people with heart disease. Cars and trucks are the primary source of carbon monoxide emissions.