hatvasup.blogg.se - Coolpack dtu

COOLPACK DTU PRO

Automatic check for updates, which can help you keep up to date.

Brings back missing exception handler, which can be used to report errors with lots of detail.

Bug fixes regarding simulation of variable speed parallel compressors.

Affects all simulations with cooling tower

Fixed unit of mWater and VAir coming from calculations, data was in kg/s and m3/s respectively, but is now in kg/h and m3/h to fit with nomenclature.

Only affects under-dimensioned cooling towers – so simulations that before ran without warnings will still return same results.

Several instabilities in Cooling Tower calculations fixed, including application crashes in the 64-bit version.

R1234ze(E) compressors were not showing up, due to alternative spelling of refrigerant name used when importing compressor data.

COOLPACK DTU PRO

*: Contact us if you are missing a compressor or OEM Download Pack Calculation Proĭownload Pack Calculation Pro – v5.1.1 (September 24th 2021) Our comprehensive database of real compressors, maintained in cooperation with OEMs*, makes it possible to compare performance of different products using a single definition for the operating conditions. We also select well-proven default values for most coefficients and parameters, though you can always customize the preferences, and import your own load profile data, to meet your specific needs. We kick-start your calculations by reducing the amount of data you should provide, among others by using load profiles and weather data to calculate the performance. Two polynomial correlations for the assessment of the pumping power in terms of the extracted and output heating loads were derived from the present work.Pack Calculation Pro is designed to compare different system designs, control strategies and refrigerants for your refrigeration or heat pump project, by calculating yearly energy consumption, as well as Life Cycle Costing (LCC) and Total Equivalent Warming Impact (TEWI). The power consumed by auxiliary pumps to circulate thermal fluid heat carriers through a heat pump may account to (4-4.5)% and (2-3)% of the extracted and output heating loads respectively, higher values could be expected for real plant. R717/R600a showed the highest heating COP, lower power consumption and lower global warming potential (GWP) among other investigated refrigerant pairs. The higher IT exhibited the highest heat pump and plant heating COP than those at the lower value.

The heat pump heating coefficient of performance (COP) revealed an increase fell within the range of (5-7.5)% higher than that of the plant heating COP value for the studied refrigerant pairs at the whole investigated operating conditions range. The evaluation of the thermal performance of the refrigerant pairs was based on a fixed heat pump extraction load at the LT cycle. Sea water at (7)☌ was used as a sustainable low temperature heat source and (30%) ethylene glycol-water brine at temperature of (5)☌ as a thermal fluid heat carrier at the LT cycle evaporator. The investigation was carried out at cascade heat exchanger intermediate temperature (IT) of (33)☌ and (35)☌. A preliminary heat pump plant is suggested to produce (500) kW heat output load as hot water demand at (65)☌ with (25)☌ temperature lift and a proper circulation rate. Four environment friendly refrigerant pairs R717/R134a, R410A/R134a, R407C/R134a, and R717/R600a were investigated at low temperature cycle (LT) evaporator and high temperature cycle (HT) condenser temperatures of (-15 to -4)☌ and (70)☌ respectively. The overall power consumption for a Cascade system for typical heat pump characteristics was studied. The present investigation deals with the performance assessment of Cascade heat pump plants.