Qualities that Determine CPU Cooling Efficiency

by | Sep 17, 2022 | Physics, Experiments

Introduction

In this experiment, we will be measuring what quality of a heat sink is important in cooling a CPU (Study of the Qualities that Determine CPU Cooling Efficiency).

Aim

To determine the quality of a heat sink in cooling a CPU (Central Processing Unit).

Theory

1. The heat sink is a heat exchanger whose work is to transfer the heat generated from electronic and mechanical devices to a medium of fluid which can be liquid or air coolant. Here the heat is dissipated away from the device and in this way temperature is maintained inside the device.

2. Heat sink is used in cooling down CPUs, chipsets, GPUs, and RAM modules.

Heat Sink

Requirements

1. Ten heat sinks of aluminium, copper, and bronze base,

2. Blue, black, and silver coloured aluminium films,

3. BIOS (Basic Input Output System) software,

4. A Cooling Gate thermometer.

Procedure

Step 1: Build ten heat sinks with aluminium, bronze, and copper bases.

Step 2: Test black, blue, and silver coloured films with every base.

Step 3: Every heat sink has three trials. And every trial has a time period of nine hundred seconds.

Step 4: Measure the heat sink and CPU temperature using a cooling gate thermometer and BIOS simultaneously.

Observation

1. CPUs cool faster when the surface area of the heat sink increases.

2. Under a forced convection situation, the cooling effect of the CPU was minimally affected by the colour of the heat sink.

3. After 300 seconds of turning on the computer, the heat sink kept the CPU at a relatively stable temperature.

4. The conductivity of the metal base is reflected by the difference between the heat sink and CPU.

5. According to the trend the temperature was based on the darkness of the heat sink. As the darkness increases, the temperature decreases except for the bronze base and silver aluminium, Fins and aluminium, base and silver aluminium, fins heat sinks.

Result

1. The efficiency of a heat sink is determined by the surface area of the heat sink.

2. During natural convection, the dark colour of the heat sink cools the heat-generating source more efficiently than the light colour heat sink. It can go up to 3 to 8%.

3. Meanwhile we have not obtained this kind of trend in our experiment due to forced convection caused by the fans of the CPU.

4. The efficiency of the heat sink is not determined by its mass.

5. Lowest to highest conductivity of metal base-

a. Bronze base with aluminium fins,

b. Copper base with aluminium fins,

c. Aluminum base with aluminium fins.

Precaution

1. Measure the temperature carefully.

2. Observe the dependence of temperature on the heat sink.

 3. Note down your observation accurately.

Conclusion

In this experiment, we have determined that the most surface area and conductivity of the heat sink are most suitable in obtaining the minimum temperature of a CPU.

Viva Questions with Answers

Q.1 What was the aim of your experiment?

ANS. My aim was to determine the quality of a heat sink in cooling a CPU (Central Processing Unit).

Q.2 What is the dependence of heat sink colour on the heat-generating sources?

ANS. During natural convection, the dark colour of the heat sink cools the heat-generating source more efficiently than the light colour heat sink.

Q.3 Does the efficiency of a heat sink be determined by its mass?

ANS. No, The efficiency of the heat sink is not determined by its mass.

Q.4 What is the work of a heat sink?

ANS. Its work is to transfer the heat generated from electronic and mechanical devices to a medium of fluid which can be liquid or air coolant.

Q.5 Name some devices in which a heat sink is used?

ANS. CPUs, chipsets, GPUs, and RAM modules.

 

 

You May Also Like To Create…

0 Comments

Submit a Comment

Your email address will not be published.