**Branch :**Mechanical Engineering

**Subject :**Applied Thermodynamics

## Calculations involved in Rankine Cycle

**Introduction:**

To analyse and determine the efficiency of rankine cycle by taking working fluid as water (1 kg) flowing through all the components of rankine cycle system.

**Description:**

By observing the rankine cycle in P-V, T-S and H-S diagrams as shown in Figure for calculating the efficiency of the rankine cycle.

The heat supplied **= Q1 = (h1 – h3) – Wp**

Where **Wp = (h4 – h3)** is called pump work per kg steam.

The heat rejected into the condenser

**= Q2 = (h2 – h3)
**

Net work done per kg of steam

**W = Q1 – Q2 = WT – WP = (h1 – h3) – Wp
**

Where WT = turbine work

The expression of thermal efficiency can also be developed by introducing thermodynamic mean temperature of heat addition. Thermodynamic mean temperature of heat addition