Domestic Hot Water Service Systems - Design Procedures

A comprehensive guide for designing hot water service systems, including demand calculation, calorifier selection, boiler sizing, and pipe design procedures.

Consumer	Temperature (°C)
Showers	43
Lavatory - hand washing	40
Lavatory - shaving	45
Tubs	43
Therapeutic baths	35
Laundry, commercial	up to 82

Calculator

Inputs

Accumulator Volume (liters)

Cold Feed Water Temperature (°C)

Hot Water Temperature (°C)

Heating Time (hours)

Results

Required Heat Supply-- kW

Calculator

Inputs

Available Heat Supply (kW)

Available Heating Time (hours)

Cold Feed Water Temperature (°C)

Hot Water Temperature (°C)

Results

Required Accumulator Volume-- liters

Calculator

Inputs

Required Volume Flow (liters/s)

Cold Feed Water Temperature (°C)

Hot Water Temperature (°C)

Results

Required Heating Power-- kW

Calculator

Inputs

Rate of Heating (kW)

Overall Heat Transmission Coefficient (W/m²K)

Logarithmic Mean Temperature Difference (K)

Results

Required Heating Surface Area-- m²