Whether you require Tips and Advice about radiators, plate heat exchangers or heating systems in general AEL have the technical expertise to provide guidance on your system design and which products are best suited to your application.
Should you not find the answer to your problem in our “Tips and Advice” articles and require any help feel free to contact our technical sales office.
Delivery Terms & Conditions
- AEL will contact you during the next working day to discuss a convenient delivery date of your order.
- Orders delivered by road transport are delivered to the nearest convenient hard standing position and the consignee is responsible for offloading.
- Standard delivery is between 9am and 5pm on weekdays only, prices for timed deliveries and weekend deliveries can be provided by our sales office upon request.
- Please note that missed deliveries can be rescheduled and are chargeable.
- We're open 9am to 5pm weekdays with Saturday collections possible by prior arrangement.
- Please note that Cast Iron Radiators are heavy so we advise that you double check the weight of your order and the maximum weight your vehicle can carry as AEL can accept no responsibility for the suitability of your vehicle.
HOW TO CALCULATE THE "DELTA T" FOR A RADIATOR
QUESTION: After using the Easy heat guide for your room on the home page of www.aelheating.com i now know the heat required for my room so how do i check that the radiator i have chosen will provide enough heat output. ANSWER: There is a simple calculation to check if the radiator you have chosen will provide sufficient heat output by checking the Delta T, please see below:
In our radiator catalogues AEL provide a heat output figure for each of our Radiators alongside our radiator dimensions, the output figures shown are based on a the water temperature entering and leaving the radiator.
If the water flow temperature in your heating system is different than the water temperature shown in the catalogue then you will need to calculate a new output figure, this is easily done , it just means multiplying the output figure in the catalogue by a figure shown on the correction chart provided at the bottom of this information sheet.
Using an 80 oC water flow in temperature, and a 60 oC water flow out temperature the average temperature in the centre of the radiator is 70 oC.
If we take away the average room temperature of 20 oC from the 70 oC average temperature across the radiator we are left with a Delta T of 50.
If the "Delta t" in the catalogue is 50 oC and your system "Delta t" is 50 oC then it = 1 on the chart below which means it is perfect so just use the outputs shown in the catalogue.
If the system "Delta t" is more or less than 50 oC then look at the actual system temperature on the left hand side of the chart and multiply the output shown in the catalogue by the factor shown on the right hand side side of the chart, this will give you your new output for the radiator.
WATER TEMPERATURE CONVERSION FACTOR