News

WHAT IS THE DELTA P IN A HEATING SYSTEM

The Delta P is the pressure drop in a heating system which can be defined as the difference in total pressure between two points (e.g A and B) of a fluid carried through the pipework or heating equipment such as a radiator as shown below.   Pressure drop occurs when frictional forces, caused by the […]

Read More


USING A PLATE HEAT EXCHANGER TO REDUCE THE RISK OF LEGIONNAIRES DISEASE

Firstly, in order to identify Legionnaires disease as a significant hazard it is important to know and understand the factors that affect the rate of growth and transmission of legionella as well as any potential exposure to the hazard. The four main factors that influence the growth of legionella are; 1. TEMPERATURE 2. WATER FLOW […]

Read More


Brazed Plate Heat Exchangers Suitable For Heat Pumps

AEL have been supplying brazed plate heat exchangers for use in many applications throughout the UK , Ireland and the Channel Islands for over 20 years. Brazed plate heat exchangers are very small in size and are a highly efficient method of providing instantaneous heat transfer between fluids in a heating system. Using Brazed plates […]

Read More


Guide To Water Flow Rates and Pressure

Below provides a guide to water flow rates and pressure when sizing a plate heat exchanger. Low Pressure Installations A gravity or low Pressure Installation in a standard two storey house with a cold feed water tank in a loft serving a hot water cylinder on the first floor. The bathroom taps would have approximately […]

Read More


Instantaneous Heating System Using a Plate Heat Exchanger

1. Plate Heat Exchanger To start, we need to know the KW required to meet the demand from the central heating circuit to start calculating the most suitable PHE 2. System Control Panel The control panel will sense the secondary flow temperature leaving the plate heat exchanger and send a signal to the modulating 3 […]

Read More


Heating Swimming Pools With Plate Heat Exchanger

1. Swimming Pool to be heated To start, we need to know the volume of the pool water, the required pool temperature and then the acceptable heat-up time of the pool from cold to start calculating the most suitable PHE. 2. System Control Panel The control panel will sense the secondary flow temperature leaving the […]

Read More


SEMI INSTANTANEOUS DHW SYSTEM USING A PHE and CYLINDER

  1. DHW Cylinder to be heated. To start, we need to know the volume of water in the cylinder, the demand from the DHW circuit , the time it will take to empty the cylinder and the time it will take to re heat the cylinder from cold to start calculating the most suitable […]

Read More


INSTANTANEOUS DHW SYSTEM USING A PLATE HEAT EXCHANGER

  1. Plate Heat Exchanger Design. To start, we need to know the peak demand from the DHW circuit and the KW power available to correctly calculate the most suitable instantaneous PHE. 2. System Control Panel. The control panel will sense the secondary flow temperature leaving the plate heat exchanger and send a signal to […]

Read More


How To Design A Plate Heat Exchanger

It is very difficult to design a plate heat performance chart without the use of the manufacturer’s software that provides the necessary correlation between: 1. The flow rate on both the primary and secondary circuits 2. Details of the fluid being used on both the primary and secondary circuits 3. The desired temperature on both […]

Read More


How To Replace Radiators Without Draining Heating System

It will take no more than 25 minutes to replace the same size and model of radiator especially if you are going to be using the same radiator valves and wall brackets, please see below: 1. Turn off the valves to isolate the radiator from the heating system Your first step is to turn off […]

Read More