Warning: Do not open the cooling system on a hot vehicle, or serious injury can occur. Let the vehicle sit for at least two hours so it is cool enough to work on safely. Step 1: Locate the radiator. Open the hood of the car and locate the radiator in the engine bay. Step 2: Access the drain spout. Coolant is usually a 50/50 mix of ethylene glycol and water, and it circulates through small passageways in the engine. As it does, excess heat transfers from the engine block to the coolant, raising this liquid's temperature. The coolant flows into one side, or the top or bottom of the radiator and then throughout the radiator's tubes. A car’s cooling system circulates coolant to dissipate heat from the engine, which is cooled in the radiator before returning to the engine. The thermostat manages this procedure, guaranteeing the engine maintains its ideal temperature range. This mechanism keeps the engine from overheating and maintains its performance. Temperature controllers maintain a set temperature level using input from a sensor, thermometer, or other device. They monitor a temperature and output a control signal to a heating or cooling device. The most basic temperature controller, a thermostat, simply starts a device at a preset temperature and stops it when a desired temperature is RLV4305A is a single pole/2 wire line voltage thermostat from Honeywell, which can operate at two voltage levels – 120 volts/240 volts. This model is 5-2 day programmable, which means you can set two different schedules, one for weekdays and the other for weekends. At 240 volts, a max load of 3500 watts can be handled. They use two strips of metal laminated together to form a bimetallic strip in the thermostat sensor. They work through expansion and contraction when the temperature rises or falls. As the temperature shifts, the thermostat switches the electrical circuit connected to the heating system on and off. a heat pump system, operating at 45F ambient, may be ______ efficient than electric resistance heat. 3 to 4 times more. Since electric resistance heat provides 1 watt of usable heat for each watt of energy purchased, electric resistance heat has a COP of; 1:1. As outside ambient air temperature decreases, a heat pump's Cop will; HVAC systems are designed to move air, heating or cooling an indoor space in the process. These systems generally have three major elements: a heating unit, a cooling unit, and ducts to move the Verify that the thermostat is switched to cool mode and has a cooling set point below the room temperature reading. Check the thermostat display for cooling, usually indicated by the words “cool on” or a snowflake icon. If these icons are flashing, the thermostat is in delay mode, which can last up to 5 minutes. Hp8B.

function of thermostat in cooling system