What is the function of a car evaporator?

1 Answers
MacCody
07/30/25 8:52am
The function of a car evaporator is to transform the refrigerant from a liquid state into a gaseous state, absorbing a significant amount of surrounding heat in the process. Subsequently, the low-temperature, low-pressure refrigerant vapor re-enters the compressor, and this cyclic process achieves the goal of cooling. During summer, it provides a comfortable riding environment for passengers, reduces driver fatigue, and enhances driving safety. Below is relevant information about car evaporators: 1. A car evaporator serves as the radiator device for both the car engine and the air conditioning system. Inside the car evaporator, there are two components: a heater core and an evaporator core. When the water in the car radiator heats up, it flows into the heater core, and the air blown out by the fan becomes warm air. When the air conditioning is turned on, the heater core stops receiving water, and the air conditioning system starts operating. The compressor forces the refrigerant into the evaporator core, blowing out cold air. 2. The evaporator is generally located inside the dashboard. When the air conditioning is activated, the evaporator undergoes heat exchange, causing a large amount of condensation to form on its surface. Meanwhile, incoming outdoor air may carry various dust particles, bacteria, and impurities, which, along with the condensation, can adhere to the surface of the evaporator.
Was this review help?
17
2
Share
More Forum Discussions

How to Drive the Most Fuel-Efficiently?

Press the accelerator pedal lightly, avoid sudden acceleration, minimize braking and acceleration, and maintain a steady speed as much as possible within the number of restarts. Do not keep the accelerator pedal in one position for a long time. Maintaining good driving habits can maximize fuel economy. In fact, besides the inherent displacement of the car itself, the driver's poor driving habits are closely related to the car's fuel economy. Poor driving habits not only waste fuel but also cause unnecessary damage to the vehicle. For example, some people like to keep their left foot on the clutch while driving, which not only increases clutch wear but also causes unnecessary power loss. "Coasting in neutral saves fuel" only applies to older carburetor models. Many modern fuel-injected engine models do not benefit from this method at all and may even consume more fuel. When coasting in neutral (especially at high speeds), the lubrication effect of the transmission deteriorates, which is harmful to the transmission. Moreover, from a safety perspective, coasting in neutral causes the vehicle to lose power, making it like a kite with a broken string. Once the engine idles, the car's power steering stops working, which can easily lead to traffic accidents.
15
2
Share

Should You Use Internal or External Air Circulation on Rainy Days?

It is recommended to use external air circulation in the car on rainy days. When the weather is cold during rainy days, both side windows can fog up, obstructing the driver's vision. Therefore, first use the external air circulation to adjust the airflow towards the windshield, then switch to external circulation to expel the steam exhaled by passengers out of the car. Introduction to External Circulation: External circulation mode uses a fan to draw outside air into the car, meaning the airflow between the outside and inside of the car is connected. The air blown by the fan comes from outside the car, and even if the fan is turned off, airflow is still drawn into the car while driving, replenishing fresh air inside. Sometimes, you may feel airflow even when the fan is off, which is because the external circulation is set. When driving in the city and encountering traffic congestion, the car may fill with exhaust fumes, which is caused by using external circulation. When to Use External Circulation: When using internal circulation for an extended period and it's inconvenient to open the windows, you can periodically switch to external circulation to bring fresh air into the car. When there are many passengers in the car, using external circulation can maintain fresh air and prevent excessive humidity inside the car from causing window fogging.
19
5
Share

What Items Are Tested in Subject 3?

Subject 3 includes the road driving skills test and the safety and civilized driving knowledge test. The road driving skills test of Subject 3 includes: Vehicle preparation, light simulation test, starting, driving in a straight line, gear shifting operations, changing lanes, pulling over, going straight through intersections, turning left at intersections, turning right at intersections, crossing pedestrian crossings, passing school zones, passing bus stops, meeting vehicles, overtaking, making U-turns, and night driving. The safety and civilized driving knowledge test includes: Safety and civilized driving operation requirements, safe driving knowledge under adverse weather and complex road conditions, emergency handling methods in situations like tire blowouts, and post-accident handling knowledge.
10
5
Share

Do imported cars have certificates of conformity?

Imported cars require certificates of conformity. However, due to different business practices, some certificates come with the vehicle while others may take a long time to be provided. When purchasing a car, it's important to pay attention to some crucial documents. For example, the purchase invoice is one of the most important documents when buying a car and is an essential certificate for vehicle registration. Whether it's a new or used car, as long as it involves a transaction, there will be a purchase invoice. After all, a car is a consumer product, and the invoice serves as important evidence for any future disputes. The certificate of conformity is another crucial document for a car and is also required for vehicle registration. Only cars with a certificate of conformity meet the national requirements for motor vehicle equipment quality and related standards, thus qualifying them to be driven on the road. The "three guarantees" cover many detailed aspects and protect consumer rights. For instance, within 60 days from the date of the purchase invoice or within 3,000 kilometers driven, if major components like the engine or transmission have quality issues, consumers can apply for free replacement of the corresponding parts. This serves as an important document for post-purchase consumer protection.
8
1
Share

Can a Land Rover be driven with low coolant?

It cannot be driven. Low coolant levels will affect the engine's cooling efficiency, preventing the coolant from circulating properly within the engine, leading to poor heat dissipation and high temperatures. When the water temperature is too high, the red coolant warning light on the dashboard will illuminate. If the engine is not turned off and driving continues, it may cause engine cylinder scoring and damage, and in severe cases, the engine may overheat and be irreparably damaged. Below are solutions for low coolant in a Land Rover: 1. First, turn off the vehicle and open the hood to check if the coolant level is low. Also, inspect the ground and engine for any coolant leaks. If it is confirmed that the coolant level is low, refill the coolant to the maximum level and promptly visit a repair facility for a cooling system pressure test to determine the cause of the issue. If the coolant level is not low and the engine temperature is normal, you may continue driving, but you should still visit a repair facility for inspection as soon as possible. 2. If you notice low coolant levels and high water temperature while driving, you should immediately stop the vehicle and refrain from driving further. Call for roadside assistance, as the cooling system may have a severe leak. Do not continue driving, as high coolant temperatures can easily cause engine damage.
1
0
Share

How to Distinguish Battery Size and Model?

Battery models consist of three parts, separated by dashes. Part One: The number of series-connected single cells, represented by Arabic numerals. Generally, a 12V battery contains six single cells, denoted by the number "6"; a 6V battery contains three single cells, denoted by the number "3". Part Two: Battery type and characteristics, usually indicated by the first letter of Chinese characters. The first letter typically represents the battery's purpose, such as Q for automotive starting batteries, M for motorcycle batteries, JC for marine batteries, HK for aviation batteries, D for electric vehicle batteries, and F for valve-regulated batteries. The second letter indicates battery characteristics, such as A for dry-charged, H for wet-charged, W for maintenance-free, S for low-maintenance, M for fully sealed, J for gel electrolyte, etc. If not specified, it indicates a standard battery. Part Three: The battery's rated capacity, commonly referred to as the battery capacity, measured in ampere-hours (Ah), which is usually not labeled. Identifying a battery mainly relies on this number.
9
4
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.