Car Cooling & Heating

How the cooling system works

The temperatures generated when the fuel is burnt (up to 2,000 C) are detrimental to engine operation. Therefore, the engine is cooled down to operating temperature . The first kind of cooling with water was thermosiphon cooling. The heated ,lighter water rises into the upper part of the radiator through a manifold and cooled by the air flow around the radiator.It then sinks down and is returned to the engine. The water is circulating while the engine is running .Cooling was supported by the fan, but regulation was not possible.Later in 1910 a water pump accelerated the water circulation.In  the further development of engine cooling thermostats were used to regulate the water circulation through the radiator. This helps shorten warm up times and keep operating temperature constant. However today the correct operating temperature of the engine is not only important with regard to performance and fuel consumption, but also for lower emission of pollutants.

How the heating system works

The hot coolant is also used to provide heat to the interior of the vehicle when needed.   This is a simple and straight forward system that includes a heater core, which looks like a small version of a radiator, connected to the cooling system with a pair of rubber hoses.  One hose brings hot coolant from the water pump to the heater core and the other hose returns the coolant to the top of the engine.  There is usually a heater control valve in one of the hoses to block the flow of coolant into the heater core when maximum air conditioning is called for.

A fan, called a blower, draws air through the heater core and directs it through the heater ducts to the interior of the car.  Temperature of the heat is regulated by a blend door that mixes cool outside air, or sometimes air conditioned air with the heated air coming through the heater core.  This blend door allows you to control the temperature of the air coming into the interior

Power Flush

THE PROBLEM

Vehicle manufacturers recommend scheduled engine coolant changes to maintain optimum condition of the cooling system. However, engine blocks ,heater matrix, hoses and water pumps do not drain completely during traditional cooling system drain and fill; in fact, up to 60% of the used contaminated fluid can remain in the system. As with engine oil and transmission fluid, coolant deteriorates with time, losing its anti-corrosion properties and allowing the formation of damaging scale and deposits. These contaminates are not removed when so much of the old fluid remains in the cooling system, retaining the damaging debris which causes wear to internal components.

THE SOLUTION

A Powerflush makes the job of engine coolant changes far more efficient. It removes old contaminated fluid e.g oil from the entire cooling system including the engine block, heater matrix, water pump and hoses. Radiator Flush converts the old coolant into a cleaning solution that loosens sludge and deposits that would otherwise cause contamination of the new coolant. The suspended sludge deposits and debris that cause poor heat transfer and restrict fluid flow are safely flushed out and removed from the cooling system.