4.5.5. Heating data<br>

### 4.5.5. Heating data

Program Instal-heat&energy enables free division of compartment heat demand between various heating methods with possibility of selection of heaters of miscellaneous types in one compartment. It is also possible to declare in compartment the floor heating and/or other methods of heating, not included in design of installation. After loading the project from Instal-therm program to the Instal-heat&energy program the calorific effect of floor heating and/or heaters loop, calculated in Instal-therm program is completed automatically. The User can also enter the heating power of radiant heating, which has been calculated by another program.

Selection of radiators is available in window of compartment edition on the tab „Heating data”.

In field „Qexc.”/”Φexc.” is displayed required value of heat demand, which should be delivered to compartment by heat receivers.

! Heat losses to be covered by heating „Qexc.”/”Φexc.” that are totally reduced heat losses of a compartment (required value of heat demand) increased or reduced by heat losses to/from adjacent compartment in case of declaring of its distribution.

A compartment can be heated by unit heaters, radiant heating, by elements with enforced resistance or by other methods of heating, see chapter 3.3. Depending on the fact, how the heating should be realized in compartment, the User will complete a table located on the right side of window.

Program will assign default the heat distribution between unit heaters and radiant heating as „Automatic”, that means, compartment heat demand will be completely covered by unit heaters. If the project will be loaded from Instal-therm program and the heat distribution between heaters and floor heating will be there also „Automatic”, then after loading of project into Instal-heat&energy the priority will concern the floor heating. It means, that „Qexc.”/ “Φexc.” of compartment will be covered by floor heating in the scope calculated in Instal-therm program.

If the User predicts presence of other types of heating in compartment, he can determine their power in table as a value in [W] in column „Q”/”Φ” or as % of compartment heat demand in column „%Q” / “%Φ”. In result the required power of unit heaters in compartment will change, because the heat losses will be covered by various methods of heating. The sum of individual heating powers of heat receivers should correspond to „Qexc.”/”Φexc.”.

In case of declaring of heat losses coverage in 100% by heat distribution from adjacent compartment, required power of heaters will be equal to 0 [W].

It is to emphasize, that the User can determine the heat distribution only for compartment being a recipient. It means, that the heat distribution is determined for direction of heat receiving “Where from” and not “Where to”.

For a compartment, which is not a heat donor „Qexc.” /”Φexc.” is automatically increased by declared, passed to the recipient value of heat stream and the field for edition of heat distribution is not available.

! Heat distribution can be declared in compartment, which is not recipient of heat from adjacent compartments. For such compartment „Qexc.”/”Φexc.” will be reduced by value of thermal power received from another compartment.

After entering the value of heat stream in field “Qdistr” / “Φdistr” – Power of heat distribution from other compartments” a tab “Heat distribution” will be displayed. The User can determine here the method of heat distribution from a pop-up list and in table select an adjacent compartment (donor) and the value of heat stream covering partially or completely the declared power of heat distribution from other compartments. Power of heat distribution from other compartment can be given in [W] or as its share in [%] in value of reduced heat losses Qexc./ Φexc.. In window “Method of heat distribution” the User can select following options:

- Manual – enables defining of both compartments and the percentage of its share in losses coverage.

- Semi-automatic – enables defining of compartments, which will cover the heat losses of selected compartment and the percentage of share of these compartments in heat distribution will be calculated proportionally to the value of total reduced heat losses of compartment.

- Automatic – the program makes decision, which compartments and to which extend will cover the heat losses of actual compartment. Selected are all heated compartments adjacent to specified compartment with declared internal doors in adjacent partitions. Losses are divided proportionally to the value of total reduced heat losses of specific compartment. Nevertheless such method of distribution requires defining of all partitions – not only cooling partitions, but as well non-cooling partitions, so the program could automatically select compartments for distribution.

Heat distribution will be correctly declared, if the sum of distributed thermal power from other compartments, displayed in table of tab „Heat distribution” will be equal to value declared in field “Qdistr” / “Φdistr”

On the tab „Unit heaters” the User will complete the heater selection table defining in succession its symbol, power in watts or adequately in percent of value Qexc. / Φexc. and type of heater from a pop-up list of loaded catalogues. In window opened next to the table behind icon are displayed heaters data, entered in table. Here, additionally the User can complete the heater’s data with data concerning its location in compartment, shielding and method of connection to heating system by means of button “Heater data”. Using the button “Heat dimensions limitation” it is possible to declare the height, depth and length of heater required in project. The User can also enforce one or more dimensions of heater. The program, depending on selected set of limitations (see chapter 4.3.4) will select an adequate heater.

Individual heaters can have various availability status saved in catalogue – available in store or on request. Because of this, it is necessary to determine the availability option for each selected type of heater in selection window. We can select taking over of options from “General data” or determine the availability individually for selected type of heater. It is possible to switch between these options by means of key for taking over of data from “General data” and the key for direct declaring of availability type. For this second case, selecting of field “Select only available on store” means, that the heater belonging to selected type can be ordered from heaters always available in basic range on the stock. Deselecting this field will mean, that the heater of selected type can be available on request.

The User can also use a default type of heater defined in „Heaters selection data”. If the User has completed concerning location of heater in compartment, method of its connection to the heating system, method of shielding and requirements concerning dimensions in “Heaters selection data”, then he does not have to complete them here.

For such defined heaters the selection results will be displayed in table below. That are: symbol of heater, symbol of compartment, temperature in compartment, required power of heater, flow of heating agent, supply temperature, temperature on return, selected type of heater, its dimensions and average matching of heating power of selected heater.

If the heater will not be matched, in the error list appears a message informing about failed heater matching. In most cases the cause of this is insufficient heater capacity towards “Qexc.” / “Φexc.” or declaring of heater dimensions limitation.

Heaters are selected taking into consideration coefficients correcting required thermal power, which has been described in APPENDIX B. APPLIED NORMS AND CALCULATION METHODS .