Quick Answer: Concentric Tube Heat Exchanger has an inner copper tube of 12.7 mm I.D. carrying hot water inside an outer G.I. pipe of approx. 15 mm I.D. carrying cold water, both 1.5 m long. The arrangement allows parallel and counter flow, with hot water from a 3 kW single phase geyser.
Last updated: October 2026
Key Features
Inner copper tube for hot water, outer G.I. pipe for cold water
Parallel and counter flow arrangement
3 kW single phase geyser for hot water
4 thermometers for inlet and outlet temperatures
Measuring flask of 1 Lit. capacity for flow measurement
Technical Specifications
Specification
Value
Inner tube
Copper, I.D. 12.7 mm
Outer pipe
G.I., I.D. 15 mm approx.
Length
1.5 m
Thermometers
4 nos.
Measuring flask
1 Lit. capacity
Geyser
3 kW, single phase
Supply
220 V, 15 A, stabilised single-phase AC
About This Product
Hot water flows through the inner copper tube and cold water through the surrounding G.I. pipe, in either parallel or counter flow. From the inlet and outlet temperatures and the flow measurement, students find the heat exchanged, the LMTD and the effectiveness of the exchanger in a HEAT TRANSFER LAB.
Frequently Asked Questions
Q1. Can the exchanger run in both parallel and counter flow? Yes. The arrangement enables parallel and counter flow of the cold water.
Q2. What can be calculated from the readings? The heat exchanged, the LMTD and the effectiveness, using the inlet and outlet temperatures and the flow measurement.
