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--- examples:non-residential_buildings:passive_house_swimming_pools [2017/12/13 18:28] – [Ventilation concept] kdreimane
+++ examples:non-residential_buildings:passive_house_swimming_pools [2017/12/13 18:33] (current) – [Comparison of the measured data with projected energy consumption] kdreimane
@@ Line 89: / Line 89: @@
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 ===== Comparison of the measured data with projected energy consumption =====
+[{{ :picopen:luenen_fig6.png?500|**Figure 6: The calcualted final energy demand (coloured bars) of the updated energy balance under the measured boundary conditions of the winter of 2012/2013 in comparison with the measured data (grey bars) from the time period between April 2012 and March 2013.** \\ \\ More accurate correlation of the calculation with the measured data is not to be expected solely  on account of discontinuous operation and remaining uncertainties relating to some of the  assumptions. The magnitudes are correctly calculated.  (Note: these are specific values  referring to the treated floor area).}}]
+The possibility of reliably predicting the energy demand of a building during the planning stage is a basic prerequisite for achieving a high level of energy efficiency as this allows optimisation of individual components and of the overall building concept. The energy flows in an indoor swimming pool are extremely complex and difficult to comprehend on account of the many interactions and control systems. The multi-zone PHPP mentioned previously was developed for this reason. This tool was during the planning stage for the specific project requirements and is still being further developed.
-The possibility of reliably predicting the energy demand of a building during the planning stage is a basic prerequisite for achieving a high level of energy efficiency as this allows optimisation of individual components and of the overall building concept. The energy flows in an indoor swimming pool are extremely complex and difficult to comprehend on account of the many interactions and control systems. The multi-zone PHPP mentioned previously was developed for this reason. This tool was during the planning stage for the specific project requirements and is still being further developed. \\
+The present monitoring data was used to verify the assumptions, approaches and calculation methods used for the energy balance and to improve these further. Major adjustment of calculation assumptions was only necessary for the heating demand of the pool water. In this case the measured data were considerably lower than the predicted values. The main reason for this variation was the evaporation, which was deliberately estimated too high during the planning phase in order to be on the safe side. No reliable data was available for a plausible estimate. The measured data presented here confirms that in practice the average evaporation quantities are significantly lower during the usage times than those given in [VDI 2089] for dimensioning the ventilation units. (Note: the VDI design values are peak load values).
-The present monitoring data was used to verify the assumptions, approaches and calculation methods used for the energy balance and to improve these further. Major adjustment of calculation assumptions was only necessary for the heating demand of the pool water. In this case the measured data were considerably lower than the predicted values. The main reason for this variation was the evaporation, which was deliberately estimated too high during the planning phase in order to be on the safe side. No reliable data was available for a plausible estimate. The measured data presented here confirms that in practice the average evaporation quantities are significantly lower during the usage times than those given in [VDI 2089] for dimensioning the ventilation units. (Note: the VDI design values are peak load values). \\
+Apart from pool water heating, the other major applications (space heating, hot water generation and electricity) were already correctly represented in the energy balance during the planning phase. With adjusted boundary conditions, correlation of the measured data with the calculations is excellent (keeping in mind unavoidable uncertainties), which confirms the calculation approach in principle and provides a valid basis for energy balancing of subsequent projects. The entire energy balance of the evaluated first year of measurement is shown in Fig. 4 in a comparison with the updated energy balance calculation with adjusted parameters (corresponding with the measured data).
+Heating the required hot water accounts for the biggest share of the overall final energy consumption (pool water and hot water for other uses), followed by the total for the electrical applications. Some of the findings obtained so far from the data evaluation of the Lippe swimming pool and their effect on the energy balance calculation are described below.
-Apart from pool water heating, the other major applications (space heating, hot water generation and electricity) were already correctly represented in the energy balance during the planning phase. With adjusted boundary conditions, correlation of the measured data with the calculations is excellent (keeping in mind unavoidable uncertainties), which confirms the calculation approach in principle and provides a valid basis for energy balancing of subsequent projects. The entire energy balance of the evaluated first year of measurement is shown in Fig. 4 in a comparison with the updated energy balance calculation with adjusted parameters (corresponding with the measured data). \\
-\\
-|{{:picopen:luenen_fig6.png?600|}}|\\
-|//**Figure 6:  \\ The calcualted final energy demand (coloured bars) of the updated energy balance under the \\ measured boundary conditions of the winter of 2012/2013 in comparison with the measured \\ data (grey bars) from the time period between April 2012 and March 2013.**\\
-\\
-More accurate correlation of the calculation with the measured data is not to be expected solely \\ on account of discontinuous operation and remaining uncertainties relating to some of the \\ assumptions. The magnitudes are correctly calculated.  (Note: these are specific values \\ referring to the treated floor area).//|\\
-\\
-Heating the required hot water accounts for the biggest share of the overall final energy consumption (pool water and hot water for other uses), followed by the total for the electrical applications. Some of the findings obtained so far from the data evaluation of the Lippe swimming pool and their effect on the energy balance calculation are described below. \\
-\\
 ===== Energy balance for heating pool water  =====