CASE STUDIES Salon Republic, USA "The quality of the designs saw significant improvement with the adoption of h2x." "The software offers precision through detailed result outputs and advanced options for efficient pipe sizing, allowing heating engineers to optimise based on parameters like maximum velocity and pressure drop." Read the full case study

Embracing the digital revolution in the form of heating design software, like that offered by h2x Engineering, is crucial for professionals who wish to stay competitive in the industry.

Consider a system with a water volume of 500L, an initial temperature (T_initial) of 10°C, and a maximum operating temperature (T_max) of 80°C.

Our roots can be traced to West Germany in the 1960s where businessman Kurt Knuever partnered with his brother-in-law, Helmut Freundlieb, to establish an applied electronics company that later became tekmar, a manufacturer of HVAC systems controls. Over time the company focused on the development and manufacturing of electronic controls for operating electric off-peak thermal storage systems, hydronic radiant floor heating systems, and snow/ice detection and melting systems.

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These vital components, also known as expansion tanks, are pivotal in maintaining system safety and operational efficiency.

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"I would estimate over the length of this project, I have spent 50% less time designing than I would on our previous software.

Ideally, they should be placed in a cooler section of the system, for instance, the return pipe close to the boiler or chiller.

This data can usually be found within the system’s design specifications. In cases where it’s not readily available, a pressure gauge might be needed to measure this pressure.

This level of detail ensured that the heating load accurately matched each space's requirements, minimising energy waste and maximising comfort.

Having understood the crucial parameters, we now venture into the specifics of calculating the size of an expansion vessel.

"The software offers precision through detailed result outputs and advanced options for efficient pipe sizing, allowing heating engineers to optimise based on parameters like maximum velocity and pressure drop."

CASE STUDIES Greengate, UK "I would estimate over the length of this project, I have spent 50% less time designing than I would on our previous software. The ability to output the design straight into Revit assisted clash detection and coordination." Read the full case study

CASE STUDIES Award-Winning Heating Design "Using h2x was pivotal, allowing for precise heat loss calculations, pipe sizing and flow rates for each room. This level of detail ensured that the heating load accurately matched each space's requirements, minimising energy waste and maximising comfort. The strategic placement of heat pumps and careful sizing of pipework were crucial in maintaining minimal pressure drops over an 18-metre distance." Read the full case study

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The maximum allowable pressure is the peak pressure that a system can safely tolerate without causing damage to its components or risking a system failure.

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The expansion vessel provides the necessary ‘give’ in the system to handle this extra volume, preventing potential over-pressurisation damage.

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They counterbalance changes in fluid volume, and consequently pressure fluctuations, which occur due to variations in temperature.

With the right software, like h2x Engineering’s Heating Design Software, you can drive efficiency and accuracy in your heating system projects.

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Moreover, to avoid the issue of pump cavitation, installing the vessel on the suction side of the recirculation pump is recommended.

The critical process of accurately calculating and correctly positioning an expansion vessel is crucial in designing and operating heating and cooling systems.

This number will vary based on your geographical location and the associated climate but will likely be around 5°C (41°F) in the winter months.

The strategic placement of heat pumps and careful sizing of pipework were crucial in maintaining minimal pressure drops over an 18-metre distance."

– Incorrect positioning: this can disrupt the vessel’s primary function of accommodating fluid volume changes, potentially leading to dangerous pressure build-ups or operational inefficiencies.

The transformation of industries by the digital revolution is a story told many times over, and heating system design is no exception.

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Gain a comprehensive understanding of expansion vessels inside this informative blog. Includes a calculation example for practical insights.

The United Association of Journeymen and Apprentices of the Plumbing and Pipefitting Industry of the United States and Canada (UA) represents approximately ...

As the water heats up, it expands, and without a place to go, this increase in volume can cause a dramatic rise in pressure.

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But if you do maintenance it is sometimes required. A water pressure regulator is a plumbing valve that reduces the water pressure coming from the main water ...

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We not only promote energy savings but we also live it. In 2002, we built a state-of-the-art 60,000 square foot facility, as a prime example of how “system thinking” can guide the design and construction of a durable, energy-efficient, and very functional building. The HVAC system includes radiant floor heating and variable air volume cooling supplied by ground source heat pumps. In addition, the building incorporates extra insulation, shading of south-facing windows, and multiple lighting levels to improve energy efficiency. The building also acts as a test-bed for future tekmar HVAC technologies and controls.

3 bar (300 kPa / 43.5 psi) is commonly used for this (recommended by CIBSE) but the manufacturer’s documentation is typically the best source for this information.

Give your heating system designs the h2x advantage and experience the difference by booking a demo or by starting your free trial today!

Since the founding of tekmar Control Systems in 1984, we have enthusiastically introduced innovative control solutions to the North American hydronic heating, ventilation, and air conditioning (HVAC) industry.

This complete system approach, which combines smart controls with good building design, has achieved impressive results that have been sustained through five years of monitoring. The tekmar building uses less than one-quarter of the energy and has one fifth of the carbon footprint of other buildings in its class and climate zone.

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At Backflow Direct, we provide high-quality, certified backflow prevention assemblies, pressure-relief valves, ACVs, strainers, and more.

Expansion vessels are required in systems where a closed circuit is subjected to a fluctuation in temperature e.g. heating and cooling systems.

An expansion vessel, or expansion tank, is a device in a heating or cooling system that accommodates the extra volume of water produced when the system water is heated or cooled.