February 7, 2019
Using free and sustainable solar energy – an excellent reason to choose an economical, environmentally friendly system like this one. But when is solar thermal
suitable for one's own use and what needs to be taken into account? Hoval provides answers.
January 15, 2019
The standard DIN EN ISO 16890 "Air filters for general ventilation", which has been valid worldwide since July 2018, marks a new development stage in the standardized
process for testing and classifying filter classes G, M and F. The new process provides significantly more reliable data on the actual...
December 18, 2018
Photovoltaics and solar thermal energy are technical processes for extracting energy from radiation. Both heat and electricity can be understood as solar energy. But
what are the differences and how do solar systems work?
December 10, 2018
Since the first energy crisis in 1973, heat recovery in HVAC systems has become the benchmark in the industry – even though there was previously no obligation to use
it and no mention of minimum thermal efficiency. With the implementation of the Ecodesign Directive 2009/125/EC, minimum thermal...
August 6, 2018
Decentralised systems for ventilation, heating and cooling large halls have proved themselves in practical applications alongside centralised systems due to their
excellent ability to adapt to the many and varied prevailing ventilation requirements. Hoval has been manufacturing decentralised climate...
April 3, 2018
Winter is coming to an end, the days are getting longer and warmer, and your heating is on less – now is the perfect time for a service. A regular service reduces your
energy consumption and ensures that your heating will keep you nice and warm again next winter without problems.
February 16, 2018
The CE marking represents a confirmation from the manufacturer of a product, stating that – in accordance with EU Regulation 765/2008 – the product fulfils the
fundamental requirements of the directives that apply to it. It is not a seal of quality.
January 18, 2018
Hardly any new residential building can do without controlled ventilation: As a rule, new buildings are so well insulated for energy reasons that there is no
spontaneous exchange of air. However, comfort ventilation also makes sense for existing houses.
January 18, 2018
Mildew does not only occur in old walls. Mildew can also strike in new buildings. Where there is moisture, the furry fungus can sprout. Are the inhabitants to blame
for not airing out the building enough? Architects who plan incorrectly? Or negligent craftsmen?
December 19, 2017
When one starts to get to grips with the requirements of the Ecodesign Directive with regard to HVAC systems, one encounters a plethora of regulations.
November 13, 2017
Hotels, hospitals and nursing homes consume huge amounts of energy. Programmes are used to keep consumption under control, and energy efficiency is the top priority
when it comes to investment decisions.
October 23, 2017
Heat pumps are more in demand than ever before: they supply heat efficiently and are environmentally friendly. Nevertheless, the more popular they become, the more
quickly myths spread concerning their characteristics and operation. In this article, we’re going to straighten things up.
July 7, 2017
When is central hall ventilation the better choice, and when should decentralised ventilation be used? This neutral comparison by Dipl.-Ing. Jürgen Dorenburg looks at
technical aspects, customer benefits and financial considerations.
May 29, 2017
The purpose of a hall ventilation system is to distribute supply air by means of a controlled and therefore calculable indoor air flow in order to dissipate heat loads
and pollutant loads. There are various types of air guidance system which can perform this task. A design procedure is therefore required which makes it possible to
assess the potential air guidance systems and select the best one for the requirements in question.
March 14, 2017
Pollution in the working area depends on the air flow concept as well as the type, arrangement and magnitude of the heat loads; beyond that, it depends on the type and
arrangement of the air outlets. For example, pollution levels up to 100% with mixed ventilation can be reduced to below 10% using alternative air flow patterns.
January 11, 2017
The energy-efficient operation of hall ventilation is insured according to the current view by regulations in the Energy Saving Ordinance (EnEV) and the Energy-related
Products Directive (ErP). They prescribe high requirements on the efficiency of room ventilation equipment. In fact, the actual energy saving starts much earlier,
namely with the selection of the calculation method that is most suitable for the particular requirements on ventilation of a hall.
December 14, 2016
Access to information, priority setting and proper communication between industries are of key importance for the success of designing systems. We currently have files
at our disposal, which can be used in 3D modeling of these buildings and building systems. This will enhance the design process and ensure a constant flow of
information between all the participants of the process. And that is what BIM (Building Information Modeling) is all about.
November 30, 2016
If You manage a hospital, hotel or own any heating system read our tips how to avoid Legionella. An improper micro climate with little air filtration can encourage the
growth of a huge amount of contaminants, including the Legionella group.
November 9, 2016
Climate technology in a production hall has to be able to provide supply air and dissipate heat loads and/or pollutant loads. In principle, air flows can be
transferred in two ways: either mechanically by ventilation and air-conditioning units or without machines by means of free (natural) ventilation using pressure
differences. These pressure differences are created inside the hall by heat released during the production processes (negative pressure) and outside by wind pressure.
November 2, 2016
Whether you are a tenant or the owner of a property – everybody can heat efficiently. With our hints you can save both energy and money, in that way you can minimize
your ecological footprint and increase the energy efficiency of your household.