The amount of heat consumed by households for heating will continue to decline. The causes of this trend, we can identify more, but they all have one common feature - the growing cost of heat. It is growing because of rising prices of inputs (raw materials, technology, labor) but also due to decreasing consumption of heat (climate change, saving measures).

The heating period 2014/2015 in Prague based on the observation of Prague-Karlov station was with 222 days, a little shorter, and with an average temperature of 6,4 °C, slightly warmer than the long-term average. Basic characteristic of heat demand for heating is 2803 D°(19) degree days, heat demand is much lower than the long-term average of 3227 D°(19). It's the second lowest number of degree days of the heating period since the beginning of the century.

In today's systems are often also used reflective film. Let us below focus on the physical principle and experimental results. We were interested in saving heat, differences in thermal performance and time to achieve operational status.

The last time we meet with the requirement to improve energy efficiency practically every step, as a result of the implementation of Directive 2012/27/EU into our legislation. The purpose of this regulation is to cause such changes in society and in the energy sector to increase energy efficiency in 2020 by 20% and created the conditions for its further growth in the longer term. The most important area in terms of energy consumption includes heating of buildings.

Owners of residential buildings and their tenants must ensure the implementation of some activities on the technical and fire safety devices in order to ensure their safety and functionality in use. Inspections and checks are therefore not just binding on the applicable regulations, but also may prevent damage to health and property.

The article deals with the change of the basic standard for flue gas of heating appliances. It draws attention to the illegality of technically unjustified distances between flue outlets on the facade and windows or other building openings. The specified distances lead to practical ban on installation of considerably cheaper gas boilers with the flue gas outlet through the facade.

The new Civil Code recognizes contribution to the management of the house and land, contribution to its own administrative activities and deposit services.

Application of heat pumps in particular water heating and space heating systems for buildings is evaluated by seasonal coefficient of performance determined by calculation procedure based on the design or from the field monitoring of installed system. Primary energy ratio PER is used for comparison of heat pump system with another heat generator from the point of non-renewable primary energy as a measure for environmental impact.

The new rules replace the TPG 605 02 from 9. 9. 2008. A brief abstract of the law contains only general requirements and building part.

A number of evaluation parameters has appeared for electrically driven heat pumps in last decade to show their energy performance quality. Text is focused on two parameters which serve for comparison of heat pumps as products – devices for heat supply.

The new rules replace the TPG 609 01 of 9. 12., 2009. A brief abstract of the law contains only general requirements and building part.

The paper introduces the energy labelling and ecodesign of heat pumps in accordance with the new European legislative requirements for water and space heaters. This text shows the energy labelling in legislation context and it is followed by next two papers which describe the procedures of heat pumps evaluation for energy labelling in more details.

The paper deals with complex solution of heating and economy measures regarding ecology of heat sources and preservation of architectural values of the Volyně college-complex. This solution also includes padding warm and exchange of windows in all complexes. New technology in boiled room was installed with application of boiler for fytomass-burning, gas condensation boilers, thermal pump in system air/water and cogeneration unit for supply electric energy.

Text presents the simplified calculation procedure for a design of ground borehole for the ground source heat pumps and the detailed method based on the annual energy balance of the building.

Text presents the simplified calculation procedure for a design of ground flat heat exchanger area for the ground source heat pumps and its extension for the case if detailed information on the annual energy balance of the building is known.

The article presents a new condensing boiler with an automatic feeding system and a burner designed for combustion of biomass with high water content. The boiler has a modular layout allowing great variability in arrangement and performance. Heat output of the boiler can vary within the range from 10 to 500 kW. A stand-alone condensation heat exchanger which is essential part of the boiler is designed as self-cleaning without fouling of heat transfer surfaces. The exchanger’s contribution to overall heat output is about 10 % when combusting wood chips with moisture exceeding 40 %.

For example, 25 kW boiler produces in operation 10 hours per day, about 35 l of condensate per day. Drain condensate from condensing boilers must be connected to the sewage system. The condensate is acidic, therefore it is necessary to use a suitable material elements drains.

The paper focuses on evaluation of heating system with air-source heat pump by bin method. Main goal of the article is to compare obtained results by evaluating heating system in family house with different temperatures of heating water and different temperatures of hot domestic water. The goal is to find out electricity consumption from a grid. The energy demand for heating and hot domestic water preparation is balanced in each interval. The evaluation was calculated with Prague Ruzyne outside air temperature data.