In situations where two different metals are immersed in seawater, conditions are created whereby they effectively become a battery. This means that an electrical current flows between the two metals which though completely separate from each other, become linked via the seawater. The result is that electrons, which make up the current, are supplied from…
The well documented problems of single use plastics that find their way into in our oceans and waterways is well known and has created the need to employ a more rigorous cleaning regime for hydraulic oil coolers to ensure the central tube core doesn’t become blocked by plastic residue, as well as other water borne…
As a fuel, Biogas has much to recommend it. It’s a renewable fuel produced by breaking down organic matter through the Anaerobic Digestion (AD) process. It reduces the amount of waste being sent to landfill, and helps control the emission of Methane gas to the atmosphere (Methane is significantly more damaging to the environment than…
Inviting as a beautiful blue swimming pool may be, if the water’s cold, no one’s going to use it! Which kind of scuppers the whole reason for having one! So, it’s no surprise that one of the most frequently asked questions on Google is ‘How do I heat my pool faster’? The answer may be…
The velocity (or flow rate) of the fluid that circulates through a typical shell and tube heat exchanger is extremely important. Not only can it have a direct bearing on the heat transfer efficiency of the heat exchanger, in instances where the incorrect flow rate is used, it is often the cause of premature failure…
Every hot tub installation is different in some way, so, the answer can depend a number of issues: The capacity of the hot tub? The outside air temperature? The heating system type? In many installations, where the hot tub is being heated via an electric heater, the answer is ‘a very long time’ – in…
In this article we look at the benefits of converting a typical reciprocating engine driven generating set into a Combined Heat & Power (CHP) system, simply by recovering ‘waste heat’ from the engine and converting it into a valuable energy source. Why recover heat from a gen-set? Every engine powered gen-set produces heat. It’s a…
An exhaust gas heat exchanger recovers heat energy from the exhaust gases of a reciprocating diesel, gas or bio gas fuelled engine and utilises this energy to heat water, which can then be used for space or process heating, cooling, via a chiller system or generating more electricity, via an ORC system. When added to…
Stagnant water – who needs it? It’s smelly and unsightly in fresh water ponds, but inside your heat exchanger, it’s potentially lethal! The problem is, this ‘silent killer’ does its worst out of sight, so, unless you’re aware of the danger and take appropriate action, you may not even realise there’s a problem – until…
In a shell and tube heat exchanger, coolant usually flows through the central ‘tube core’ to cool hot oil, water or air, which passes over and around the tubes. The direction in which the two fluids travel through the heat exchanger can be either ‘parallel flow’ or ‘counter flow’. In this article we are looking…
Getting the right specification for your heat exchanger can make a significant difference to the performance and life expectancy of the unit. Here we discuss the importance of single, double and triple pass cooling. Every shell and tube heat exchanger carries a flow of cooling water through its central tube core. But depending on its…
