![]() ![]() Now, let’s take a look at how things can be done much smarter and less complex by applying a different mind-set and a different control strategy.īecause do we really need all the components in the system we just looked at? The answer is no.īy connecting the temperature sensor directly to the pump we are able to control the pump by means of the constant discharge temperature and so make the differential pressure sensor – as well as the temperature control valve – redundant. Again, the system does what it is supposed to do – but the presence of a temperature control valve still equals pressure losses in the feed pipe, which requires the pump to work harder and increases the energy consumption It’s a simple system design that gets the job done – but far from energy-efficiently because the pump operates at constant speed even when demand is at a minimum.Ī slightly more advanced solution is achieved by replacing the constant speed pump with a variable speed pump and add a differential pressure sensor. The one you see here features a constant speed pump, a temperature sensor and a temperature control valve, which controls the temperature on the discharge of the exchanger. Traditionally, there are two ways to design a temperature control system. In this tutorial we’ll be paying primary attention to the control mode and system losses. ![]() And not least the losses in the system.The operating cost of temperature control depends on a number of things: Temperature control is a crucial part of a wide range of industrial applications and an obvious place to look for optimisation opportunities. We’ll touch upon that later in the tutorial. It is, however, possible to go even higher than that. According to a Europump study, 30% of potential energy optimisation can be found in better system control and better system design. Let’s begin by taking a look at the stats. In this tutorial we’ll show how intelligent system design will lead to optimised performance and significant energy savings, using temperature control as an example. One of the downsides to this is unnecessarily high energy consumptions – but it doesn’t have to be that way. Far too many industrial applications are characterised by complex system design and pumps that operate at full speed no matter the requirements.
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