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CYPETHERM EPlus
Update history

CYPETHERM EPlus

TOSHIBA multi-split systems

As of the 2018.d version, it is possible to define TOSHIBA multi-split systems. These systems consist of an outdoor unit and between 2 and 5 indoor units.

In Air conditioning systems, the new tab: Multisplit appears, where users can add and define outdoor units of this type contained in the project. In the panel, users can choose amongst different outdoor TOSHIBA multi-split units and define some conditions of the installation which are required for the design process.

Indoor multi-split units are defined in the Terminal units section, where the new type of terminal unit: “Multi-split”, has been included. In this panel, users can choose amongst TOSHIBA models and must indicate which outdoor unit is connected to the indoor unit that has been defined.

It is possible to define several multi-split type indoor units within the same thermal zone. In the simulation, EnergyPlus™ will sequentially use the terminal units that are located within the same zone and following the order defined in the Terminal units list.

Design conditions of air conditioning systems

A new section has been added in the Zone window (which appears when a Zone is selected in the tree diagram of the “Building” tab): Air conditioning systems. This section gathers, in a single panel, all the design conditions of air conditioning systems that were previously defined in panel of each terminal unit.

In the new panel, users can specify the design temperature (or temperature difference) of the discharge air of the zone, for both heating and cooling. A scale factor is also defined for each mode (heating or cooling), which will be applied to the design flows and loads of the zone calculated by EnergyPlusTM.

Low-temperature radiant heating terminal

When the “Air conditioning systems” section is selected (tree diagram of the “Building” tab), in the “Terminal units” window that appears, the “radiant heating terminal” has been divided into different groups: Electric, High temperature (> 60ºC) and Low temperature (< 60ºC).

Until now, for these terminals, users could choose between “Electric” and “Hot water”. As of the 2018.c version, “Hot water” has been divided into “High temperature (> 60ºC)” and “Low temperature (< 60ºC)”.

The new “Low temperature (< 60ºC) type is more adequate to simulate systems such as radiant floors or radiators that operate with water at less than 60ºC. In the 2018.c version, the low temperature radiant heating terminal is only compatible with the Aerothermal system (also implemented with this version).

Aerothermal equipment. TOSHIBA Estia system

Aerothermal equipment consists of a heat pump that produces hot water for heating and sanitary hot water, with the possibility to invert the cycle for cold production. In the 2018.c version, CYPETHERM programs with the EnergyPlusTM analysis engine (CYPETHERM HE Plus, CYPETHERM RECS Plus and CYPETHERM EPlus) are capable of simulating this air conditioning system based on its behaviour curves, and incorporate TOSHIBA’s Estia system.

Introduction of TOSHIBA Estia systems

When users select the “Air conditioning systems” section, located in the tree diagram of the “Building” tab (to the left of the screen), the Aerothermal tab appears in the “Systems” section (middle of the screen). Here, users can add and define this type of systems to be added in the project. Users can choose, in the panel, amongst the different outdoor and indoor TOSHIBA Estia system units, and choose whether the system will only be used for heating or also for cooling. Users must specify the working temperature conditions of the installation and its operation mode during the year.

Aerothermal systems can be connected to “Low-temperature radiant heating terminals” (only heating), also implemented in this version; and to fan coil terminals (heating and cooling). In the panel of these last items, users must specify whether the fan coil is to be connected to a conventional water distribution, as up to now, or to an aerothermal system. Within the same thermal zone, it is possible to define any number of terminal units associated to aerothermal systems. In the simulation, EnergyPlusTM will sequentially use the terminal units that are located in the same zone, in the order defined in the Terminal units lists.

The aerothermal system can be used to produce sanitary hot water. To do so, users must define it in the “DHW systems” section, located in the tree diagram of the “Building” tab. If users wish to use the same aerothermal system for air conditioning and hot water, the same outdoor unit model must be selected in both windows.

Open BIM workflow. Import TOSHIBA Estia aerothermal equipment from IFC files

TOSHIBA Estia aerothermal equipment defined in CYPETHERM HVAC can be imported directly in CYPETHERM programs with the EnergyPlusTM analysis engine (CYPETHERM HE Plus, CYPETHERM RECS Plus and CYPETHERM EPlus) via the Open BIM connection using the IFC standard.

Radiant heating and other types of terminal units in the same thermal zone

Within the air conditioning systems, it is possible to simulate a radiant heating terminal in a thermal zone that contains any other type of terminal unit (except the constant performance equipment).

Until now, a radiant heating terminal situated in a thermal zone in which another terminal unit was present was defined in the panel of the latter element. As of the 2018.a version, the radiant heating terminal must always be defined as an independent terminal unit associated to the corresponding thermal zone.

Several VRF terminal units per thermal zone

As of the 2018.a, CYPETHERM programs with the EnergyPlusTM analysis motor allow users to define several VRF type (indoor) terminal units associated to the same thermal zone. In previous versions it was only possible to simulate one VRF terminal unit in each thermal zone.

Open BIM workflow. Import TOSHIBA VRF equipment systems from IFC files

The TOSHIBA VRF air conditioning equipment defined in CYPETHERM HVAC can be imported directly in CYPETHERM programs with the EnergyPlusTM engine (CYPETHERM HE Plus, CYPETHERM RECS Plus and CYPETHERM EPlus) with the Open BIM connection using the IFC standard.

This way, in CYPETHERM HE Plus, CYPETHERM RECS Plus and CYPETHERM EPlus, it is possible to directly simulate the energy consumption of VRF installations designed in CYPETHERM HVAC without having to reintroduce them, if the project that has been created in these programs is linked to an Open BIM project.

Toshiba variable refrigerant flow systems

Toshiba VRF systems have been implemented in the catalogue selection of variable refrigerant flow systems. As well as being able to define the properties of a “generic” VRF system, as up to now, users can choose amongst the Toshiba models that are completely defined in the program.

In the Terminal unit window (see image), when the Variable refrigerant flow (VRF) option is selected, users can choose indoor Toshiba units by type and model. Their main catalogue properties are displayed.

Similarly, outdoor units can be found in the Variable refrigerant flow (VRF) tab of the Systems window.

EnergyPlus analysis engine update to version 8.7

The EnergyPlusTM analysis engine has been updated in the 2017.k version in all CYPE programs that use it: CYPECAD MEP, CYPETHERM HE Plus, CYPETHERM EPlus and CYPETHERM RECS Plus. This way, all CYPE programs will now use the latest available version of the analysis motor of the US Department of Energy (DOE); version 8.7, published on 31st March 2017.

Edit behaviour curves of hot and cold water production equipment

The behaviour of the hot and chilled water production equipment varies depending on the working conditions. As of previous versions, the energy simulation programs of CYPETHERM that used the EnergyPlusTM analysis motor (CYPETHERM HE Plus, CYPETHERM RECS Plus and CYPETHERM EPlus), consider this variation using typical behaviour curves for each type of system that is defined in the “template” objects of EnergyPlusTM.

As of the 2017.j CYPE program version, users can edit behaviour curves of hydronic production equipment (boilers and coolers). For the equipment, users can choose whether to use the default curves or use user-defined behaviour curves. The program offers two options to introduce this data: in a table or as a polynomial curve.

Export to CYPETHERM Improvements

As of the 2017.i version, and for CYPETHERM programs that use the EnergyPlus™ analysis motor (CYPETHERM HE Plus, CYPETHERM RECS Plus and CYPETHERM EPlus), users can export results, in “XML” format to CYPETHERM Improvements.

CYPETHERM Improvements was already included in the CYPE software package when it was installed in Italian and Portuguese. As of the 2017.i version, CYPETHERM Improvements is also available in Spanish, French and English.

More information can be found in the CYPETHERM Improvements section of this webpage.

Internal equipment

As of the 2017.i version, and for CYPETHERM programs that use the EnergyPlus™ analysis motor (CYPETHERM HE Plus, CYPETHERM RECS Plus and CYPETHERM EPlus), the definition of the internal equipment of personalised spaces has been changed. Now, this definition is obtained from an equipment list where users can define each one with its power and associated energy vector.

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