## What is the condenser approach?

A condenser approach is a difference between liquid refrigerant temperature as measured on the liquid line, and leaving condenser water temperature. Generally, the condenser approach for a water-cooled chiller will be in the range of 0 to 4 degrees.

## What is condenser approach in HVAC?

Condenser approach temperature is simply defined as the difference between the condenser liquid refrigerant temperature and the outlet condenser water temperature. The closer these temperatures are to each other, the more efficient the heat transfer.

**How do you calculate condenser efficiency?**

Vacuum efficiency = (Actual vacuum in condenser X 100)/Max.

### What is the efficiency of a condenser?

The thermal efficiency of a condenser is defined as the ratio of actual rise in temperature of cooling water to the maximum possible rise. ts = saturation temp., corresponding to condenser pressure (i.e., vacuum temp.) Numerical Example : Vacuum in a condenser is found to be 708.5 mm Hg .

### How efficient is a condenser?

An average improvement in condenser vacuum of 0.35 inches Hg can result in a 30 to 70 Btu/kWh heat rate improvement, resulting in an annual fuel, operations, and maintenance savings of $60,000 for a 500-MW power plant (Figure 3). Electrical Efficiency.

**What is the capacity of condenser?**

It is found by experiment that the charge required to produce a certain difference of potential between the plates of a condenser bears a constant ratio to the difference of potential. This constant ratio is called the capacity of the condenser.

Overall heat transfer coefficient

The temperature difference across the wall is “T = T2 ” T1. It has been experimentally observed that the rate of heat conduction through a layer is proportional to the temperature difference across the layer and the heat transfer area, but it is inversely proportional to the thickness of the layer.

**Which mode of heat transfer does not require any media?**

Transfer of heat by radiation does not need any material medium. Energy from the sun comes to us by radiation.

## What does negative heat transfer mean?

Rate of heat transfer is the amount of heat transferred per unit time. Sign convention: Heat Transfer to a system is positive, and heat transfer from a system is negative. It means any heat transfer that increases the energy of a system is positive, and heat transfer that decreases the energy of a system is negative.

## What is the critical radius of insulation?

The critical radius of insulation is a counterintuitive concept within the study of heat transfer. The theory states that adding insulation to a cylindrical or spherical object will increase the rate of heat loss rather than decrease it, if the radius (thickness) of the insulation is at its “critical” value.

**Is critical radius of insulation required for heat transfer justify?**

THE CRITICAL RADIUS OF INSULATION. We know that by adding more insulation to a wall always decreases heat transfer. This is expected, since the heat transfer area A is constant, and adding insulation always increases the thermal resistance of the wall without affecting the convection resistance.

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