Related Experiment Video
Updated: Aug 28, 2025

07:18
Experimental System of Solar Adsorption Refrigeration with Concentrated Collector
Published on: October 18, 2017
14.7K
Computational Intelligence Powered Experimental Test on Energy Consumption Characteristics of Cold-Water Phase-Change
Ronghua Wu1,2, Hao Yu2, Ying Xu3
1College of Mechanical and Electrical Engineering, Qingdao University, Qingdao 266071, Shandong, China.
Computational Intelligence and Neuroscience
|September 16, 2022
Summary
This study analyzes the energy consumption of cold-water phase change heat pump systems. Optimized deicing and melting processes can improve the effective coefficient of performance (COP) for wider future applications.
Area of Science:
- Energy Science
- Thermodynamics
- Mechanical Engineering
Background:
- Phase change heat pump systems are crucial for efficient thermal management.
- Understanding energy consumption characteristics is key to optimizing system performance.
- Deicing capabilities significantly impact the overall efficiency of cold-water systems.
Purpose of the Study:
- To investigate the energy consumption characteristics of a cold-water phase change heat pump system.
- To analyze the influence of deicing energy consumption on the effective energy efficiency ratio.
- To evaluate the primary energy utilization ratio and coefficient of performance (COP).
Main Methods:
- Design and construction of an experimental cold-water phase change heat pump system.
- Analysis of deicing energy consumption and unit energy consumption using computational intelligence.
- Calculation of the primary energy utilization ratio and effective COP.
Main Results:
- The deicing capacity was found to be approximately 0.135.
- The primary energy utilization ratio was calculated to be around 1.145.
- The unit's COP ranged from 2.8 to 3.2, with an effective COP between 2.42 and 2.76 after considering deicing energy consumption.
Conclusions:
- The cold-water phase change heat pump system demonstrates potential for wide future application.
- Optimization of ice-making and melting processes is recommended to enhance the effective COP.
- Reducing heat loss and power loss during phase transitions is critical for improved efficiency.
Related Concept Videos
Refrigerators and Heat Pumps
2.4K
Refrigerators or heat pumps are heat engines operating in a reverse direction. For a refrigerator, the focus is on removing heat from a specific area, whereas, for a heat pump, the focus is on dumping heat into one particular area. A refrigerator (or heat pump) absorbs heat Qc from the cold reservoir at Kelvin temperature Tc and discards heat Qh to the hot reservoir at Kelvin temperature Th, while work W is done on the engine’s working substance.
A household refrigerator removes heat from...
A household refrigerator removes heat from...
2.4K
Heating and Cooling Curves
23.2K
When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
23.2K
Energy Conservation and Bernoulli's Equation
9.4K
Applying the conservation of energy principle or the work-energy theorem to an incompressible, inviscid fluid in laminar, steady, irrotational flow leads to Bernoulli's equation. It states that the sum of the fluid pressure, potential, and kinetic energy per unit volume is constant along a streamline.
All the terms in the equation have the dimension of energy per unit volume. The kinetic energy per unit volume is called the kinetic energy density, and the potential energy per unit volume is...
All the terms in the equation have the dimension of energy per unit volume. The kinetic energy per unit volume is called the kinetic energy density, and the potential energy per unit volume is...
9.4K
Quantifying Heat
55.6K
Thermal Energy Microscopically, thermal energy is the kinetic energy associated with the random motion of atoms and molecules. Temperature is a quantitative measure of “hot” or “cold”, which depends on the amount of thermal energy. When the atoms and molecules in an object are moving or vibrating quickly, they have a higher average kinetic energy (KE) (or higher thermal energy), and the object is perceived as “hot”, or it is described as being at a...
55.6K
Heat Flow and Specific Heat
5.6K
Heat is a type of energy transfer that is caused by a temperature difference, and it can change the temperature of an object. Since heat is a form of energy, its SI unit is the joule (J). Another common unit of energy often used for heat is the calorie (cal), which is defined as the energy needed to change the temperature of 1 g of water by 1 °C, specifically between 14.5 °C and 15.5 °C, since the energy needed shows a slight temperature dependence. Another commonly used unit is...
5.6K
Heat Capacity: Problem-Solving
583
The heat capacity of a gas is the amount of heat energy required to raise the temperature of a unit mass of gas by one degree Celsius. It is an important thermodynamic property of gases, and its determination is essential in many industrial and scientific applications. Here are the steps to solve problems related to the heat capacities of gases:
Determine the type of gas: The heat capacity of a gas depends on its molecular structure and the degree of freedom of its molecules. Different types of...
Determine the type of gas: The heat capacity of a gas depends on its molecular structure and the degree of freedom of its molecules. Different types of...
583

