9.2.6. Table of results for radiant heating<br>

### 9.2.6. Table of results for radiant heating

Results of radiant heating calculations are assigned to individual manifolds in the project.

Manifold label is at the top of the table:

Type of manifold inserted: | symbol (name) of manifold |
Supplied from: | symbol of supply source of control circuit to which the manifold is assigned and (in brackets) supply temperature determined for that circuit (in effect, the supply temperature of the manifold) | [0C]
No. of outlets: | number of outlet ports in manifold, including spare ports, specified in data table |
Settings on: | location of manifold valves on supply or/and return side |
G: | total mass flow rate in manifold | [kg/h]
Avail. press. | available pressure for the manifold | [Pa]

All lines below with results for rooms and HZ’s within them apply to this manifold down to the label of the next manifold or label of a HZ heated by pipe feeds. The line with room results includes the following fields:

Room: | symbol (name) of room |
ti/qi | temperature inside the room | [0C]
Qrh/Frh | required output of radiant heating, determined in room data on the basis of heat loss minus loss to floor and percentage to be covered by floor heating, or specified | [W]
Surplus Q/F | difference between output provided and output required. Positive value indicates excess of output in relation to requirements (line in red colour), negative value indicates shortage of output (line in blue colour). The value in the field takes into account the total output from all HZ’s within the room | [W]
No. of HZs: | number of heating circuits within the room |
ts/qs acc. to EN: | supply temperature of the circuit of the given room according to EN standard | [0C]

Results for individual HZ’s include:

HZ Symbol Floor covering / Rlb | top line: symbol (name) of HZ bottom line: type of floor covering and its heat resistance. If a numerical value was entered as the covering, rather than being selected from the list of available options, <cov. unknown> appears along with the specified value of heat resistance of the covering | [(m2K)/W]
Qreq/Freq | required total output of the HZ, assigned to it during automatic distribution of Q/F or specified by the user | [W]
Surp. Q/F | difference between output provided and output required. Positive value (red) indicates excess of output in relation to requirements, negative value (blue) indicates shortage of output. The sum of surplus outputs of HZ’s within the room is equal to the value in the “Surplus Q/F” field in the room label | [W]
Dt/Dq | calculated temperature drop of the heating medium in the circuit. This always applies to the entire circuit. also in the case of an integrated peripheral zone (cPZ or uPZ) | [K]

PZ

OZ

this field describes the contents of the following three fields with which it creates a set of results separated from other fields by continuous vertical lines

– if the HZ has no integrated peripheral zone, “OZ” appears in the top line in case of circuit that forms occupied zone or “PZ” in case of circuit defined as peripheral zone forming a separate circuit. Bottom line remains empty.

– in the case of HZ with PZ integrated with OZ, the top line displays “cPZ” for a PZ created by compacting the pipe laying pattern or “uPZ” for a PZ connected upstream of OZ. In the following three result fields, the first line refers then to this integrated PZ. The bottom line displays “OZ” and the second line of the following three result fields will then refer to the part of circuit that forms occupied zone.

area | effective area of HZ or of separate parts of HZ (see explanation of “PZ / OZ" field). Covers the total effective area of HZ, including the area of pipe feeds running across the HZ. In case of HZ’s with integrated PZ, the area of pipe feeds is always subtracted from the part of HZ forming OZ, even if the pipe feeds on the drawing run across the peripheral zone | [m2]
T (or B, b, p, r, VA) | pipe spacing within HZ or in its separate parts (see explanation of “PZ / OZ” field) | [mm] [cm] [m]
tfs/qfs/q | temperature of floor surface (average) and heat flux density (output obtained from 1 square metre) calculated for the HZ or its part (see explanation of “PZ / OZ" field) | [0C] / [W/m2]
Area feeds pass. | surface area of pipe feeds running across. Displays the calculated total surface area of pipe feeds running across the HZ. The area depends on the lengths of individual fragments of pipe feeds and their spacing of pipe laying determined by the program or specified by the user. |
Qfeeds/Ffeeds | output of pipe feeds running across. Depends on the total area of pipe feeds, spacing of pipe laying used for individual fragments of pipe feeds, insulation of pipe feeds, percentage of utilisation of their output and system operation conditions. | [W]
Total len. pipes feed+circ. | top line: total length of pipes of the heating circuit, including the length of pipe feeds bottom line: length of pipe feeds running from manifold to the circuit + length of pipe forming the proper heating circuit. The sum of these two values is equal to the total length in the top line |
Flow | top line: mass rate of flow of heating medium in the circuit bottom line: velocity of flow of heating medium in the circuit | [kg/h] [m/s]
Press.drop pipe + fit. s.v.; r.v. | top line: linear pressure drop in circuit including pressure drop on pipe fittings connecting the manifold bottom line: pressure drop on valves installed on manifold. The first figure represents pressure drop on valve on the supply end, the second figure is for pressure drop on valve on the return end | [kPa]
Valve set. | setting of valve on the manifold. Letter in brackets indicates whether the setting refers to the valve on the supply end – “(S)”, or on the return end – “(R)”. This field is filled in only when the entire manifold is adjusted |