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  2. Mercedes-Benz M176/M177/M178 engine - Wikipedia

    en.wikipedia.org/.../M177/M178_engine

    Coolant delivery 3 phase thermostat, timing chain driven water pump rated 420 litres (110 US gal; 92 imp gal) /min flow Oil delivery 9 litres (2.4 US gal; 2.0 imp gal) oil, dry-sump, via two-stage controlled suction pump (250 litres (66 US gal; 55 imp gal) /min), a pressure pump and a 12 litres (3.2 US gal; 2.6 imp gal) external oil tank

  3. Damper (flow) - Wikipedia

    en.wikipedia.org/wiki/Damper_(flow)

    This damper can switch the electrical power to control additional "slave" dampers, minimizing the electrical load on the damper's control circuitry and power transformer. A zone damper (also known as a Volume Control Damper or VCD) is a specific type of damper used to control the flow of air in an HVAC heating or cooling system. In order to ...

  4. HVAC control system - Wikipedia

    en.wikipedia.org/wiki/HVAC_control_system

    HVAC (Heating, Ventilation and Air Conditioning) equipment needs a control system to regulate the operation of a heating and/or air conditioning system. [1] Usually a sensing device is used to compare the actual state (e.g. temperature) with a target state. Then the control system draws a conclusion what action has to be taken (e.g. start the ...

  5. Template:Convert/list of units/volume/imp - Wikipedia

    en.wikipedia.org/.../list_of_units/volume/imp

    imperial barrel: impbbl imp bbl 1.0 imp bbl (160 L; 36 imp gal; 43 US gal) kilderkin: kilderkin (none) 1.0 kilderkin (82 L; 18 imp gal; 22 US gal) : firkin: firkin ...

  6. Reversing valve - Wikipedia

    en.wikipedia.org/wiki/Reversing_valve

    A reversing valve removed from an HVAC heat pump for replacement. A reversing valve is a type of valve and is a component in a heat pump, that changes the direction of refrigerant flow. By reversing the flow of refrigerant, the heat pump refrigeration cycle is changed from cooling to heating or vice versa. This allows a residence or facility to ...

  7. Testing, adjusting, balancing - Wikipedia

    en.wikipedia.org/wiki/Testing,_adjusting,_balancing

    In heating, ventilation, and air conditioning (HVAC), testing, adjusting and balancing (TAB) are the three major steps used to achieve proper operation of heating, ventilation, and air conditioning systems. TAB usually refers to commercial building construction and the specialized contractors who employ personnel that perform this service.

  8. Variable air volume - Wikipedia

    en.wikipedia.org/wiki/Variable_air_volume

    Control of the system's fan capacity is critical in VAV systems. Without proper and rapid flow rate control, the system's ductwork, or its sealing, can easily be damaged by overpressurization. In the cooling mode of operation, as the temperature in the space is satisfied, a VAV box closes to limit the flow of cool air into the space.

  9. Condenser (heat transfer) - Wikipedia

    en.wikipedia.org/wiki/Condenser_(heat_transfer)

    A condenser unit used in central air conditioning systems typically has a heat exchanger section to cool down and condense incoming refrigerant vapor into liquid, a compressor to raise the pressure of the refrigerant and move it along, and a fan for blowing outside air through the heat exchanger section to cool the refrigerant inside. A typical ...

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