Which is more effective way to increase the efficiency of a Carnot engine?
The efficiency of the carnot engine can be increased by either increasing the sink temperature or by decreasing the reservoir temperature.
What are limitations of Carnot cycle?
isentropic process is possible if it very fast. This alternate combination of very fast, very slow, very fast and very slow is not possible to achieve in actual practice and these are thus the limitations of this cycle.
What is COP Carnot?
The coefficient of performance (COP) of a refrigerator (or heat pump) comprised of reversible processes (CARNOT) is always greater than the COP for a sequence of irreversible (real) processes operating between the same high and low temperature reservoirs (regardless of type of devices, working fluid, etc.).
Can COPs be negative?
and we know that efficiency is always less than 1, so the reciprocal of efficiency is always greater than 1. Hence COP(heat pump) is always greater than 1. so COP(refrigerator) ranges from 0 to any other value greater than 0. Hence its not that always COP(refrigerator) is greater than 1.
What is the minimum COP that will be acceptable for the pump?
Minimum COP Efficiency Standards (Geothermal Heat Pumps Only)
| Product Type | EER | COP |
|---|---|---|
| Open Loop Water-To-Air Heat Pump | 21.1 EER | 4.1 COP |
| Closed Loop Water-To-Water Heat Pump | 16.1 EER | 3.1 COP |
| Open Loop Water-To-Water Heat Pump | 20.1 EER | 3.5 COP |
| DGX Geothermal Heat Pump | 16.0 EER | 3.6 COP |
What is the relationship between COP of heat pump and refrigerator?
ANSWER: [COP]H.P. = 1 + [COP]ref Therefore, A refrigerator is a device, which operates in a cycle and maintains the temperature a particular body lower than the surrounding temperature. And in heat pump, the desired effect is to maintain temperature of the body B more than the surrounding temperature.
Can the COP of a heat pump be greater than unity?
Coefficient of Performance (COP) The pragmatic definition of the COP is: COP = (What you Get)/(What you Pay For). This measure of performance can have a value greater than unity, and it is this fact that makes a heat pump an attractive device.
Can the COP of a heat pump be greater than 1?
Relation between COP of Heat Pump and Refrigerator The COP of the refrigerator and air-conditioner can be less than one or greater than one. The above formula also shows that the COP of the heat pump can never be less than one; it is always more than one.
What is COP in chiller?
Calculating the efficiency of a chiller is fairly simple. It is measured in “COP” which stands for Coefficient Of Performance. The Coefficient of performance is just a ratio of the refrigeration effect produced by the chiller against the amount of electrical energy that went into the machine to produce this.