Informe de Gestión de Operaciones Avisos, Fallas y Anormalidades

There are seven questions, each one requires an agree or disagree answer. It is estimated that it will take 10 minutes to complete all questions in this survey.

Reminder of the project

General Information

This project is using a survey to collect data on the most commonly installed Heating, Ventilation, and Air Conditioning (HVAC) systems in New Zealand commercial buildings. From this, standard descriptions will be created and transformed into HVAC templates which will be used within computer based building energy simulations. This information is contributing towards the Building Energy End-use Study (BEES) currently being performed by BRANZ (Building Research Association of New Zealand).

Scope

This survey is limited to gather information on HVAC systems that have been designed, specified, and built in New Zealand commercial buildings.

There is a focus on buildings with a total floor area greater than 3,500 m2 _{and built or}

designed over the last 10 years.

Confidentiality

The information and data that is collected within this survey will be kept anonymous and confidential.

No individuals, companies, or affiliations will be identified within the reporting of the results.

Q1.0 –

Email Address

This is collected to ensure that the survey is only answered once. Please Type. ____________________________

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Q2.0 –

Chilled Beams, good energy efficiency building

From the previous round of questions, these values were identified as being likely for a chilled beam system in a commercial building that has good energy efficiency.

General Aspects

Percentage of building serviced: 76% - 100% Controls: Thermostat, CO2 Sensor, BMS

Outdoor air supply rate: 15 L/s per person

Equipment Types

Cooling coil: Water

Heating coil: None, but with baseboard heating Chilled beam type: Active / fan assisted

Plant Type

Chiller type: Centrifugal

Chiller to chilled beam water loop pumps: Constant primary, variable secondary Chiller condenser type: Water cooled

Chilled water condenser water loop pump: Variable (Intermittent)

Chiller condenser water temperature control: Variable (Based on outside temperature) Cooling tower: Two speed

Performance Values

Chilled beam water inlet temperature: 12o_C

Chiller full load COP: 4.2

Please indicate any fields that you disagree with, suggest a better value, and provide reasoning(s) why you disagree.

Type text in the box below

If nothing is typed in the box above, it will be assumed that you agree with all of the values presented for this system.

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Q2.0 –

Variable Air Volume, good energy efficiency building

From the previous round of questions, these values were identified as being likely for a VAV system in a commercial building that has good energy efficiency.

General Aspects

Percentage of building serviced: 76% - 100% Controls: Thermostat, CO2 Sensor, BMS

Outdoor air supply rate: 15 L/s per person

Equipment Types

Cooling coil: Water Heating coil: Water

Baseboard heating type: Water heated Reheat coil: Water heated

Supply fan type: Draw through Fan layout: Parallel

Heat recovery: Enthalpy (Recovers both sensible and latent heat) Night cycle ventilation: Using central air handler fan

Dehumidifier: None Humidifier: None

Plant Type

Chiller type: Centrifugal

Chiller to coil water loop pumps: Constant primary, variable secondary Chiller condenser type: Water cooled

Chilled water condenser water loop pump: Variable (Intermittent)

Chiller condenser water temperature control: Variable (Based on outside temperature) Cooling tower: Two speed

Boiler fuel type: Natural gas

Boiler to coils water loop pumps: Variable (Intermittent)

Performance Values

Supply fan efficiency: 0.7 Supply fan motor efficiency: 0.9

Cooling coil inlet setpoint temperature: 15o_C

Heating coil inlet setpoint temperature: 10o_C

Preheat coil setpoint temperature: 35o_C

Heat recovery – Sensible effectiveness: 0.75 Heat recovery – Latent effectiveness: 0.70 Chiller full load COP: 4.0

Chiller cold water setpoint temperature: 6o_C

Condenser water setpoint temperature: 30o_C

Boiler efficiency: 0.90

Boiler hot water setpoint temperature: 80o_C

Please indicate any fields that you disagree with, suggest a better value, and provide reasoning(s) why you disagree.

Type text in the box below

If nothing is typed in the box above, it will be assumed that you agree with all of the values presented for this system.

Q3.0 –

Fan Coil Units, common practice building

From the previous round of questions, these values were identified as being likely for a fan coil unit system installed as common practice in a commercial building.

General Aspects

Percentage of building serviced: 51% - 75% Controls: Thermostat, BMS

Outdoor air supply rate: 10 L/s per person

Equipment Types

Cooling coil: Water Heating coil: Water

Plant Types

Chiller type: Centrifugal

Chiller condenser type: Air cooled

Chiller to coils water loop pumps: Constant primary, variable secondary Boiler fuel type: Natural gas

Boiler to coils water loop pump: Variable (Intermittent)

Performance Values

Supply fan efficiency: 0.70 Supply fan motor efficiency: 0.90

Cooling coil inlet setpoint temperature: 14o_C

Heating coil inlet setpoint temperature: 50o_C

Chiller full load COP: 2.5

Chiller cold water setpoint temperature: 6o_C

Boiler efficiency: 0.85

Please indicate any fields that you disagree with, suggest a better value, and provide reasoning(s) why you disagree.

Type text in the box below

If nothing is typed in the box above, it will be assumed that you agree with all of the values presented for this system.

Click on the >> button to progress

Q4.0 –

Variable Air Volume, common practice building

From the previous round of questions, these values were identified as being likely for a VAV system installed as common practice in a commercial building.

General Aspects

Percentage of building serviced: 76% - 100% Controls: Thermostat, BMS

Outdoor air supply rate: 10 L/s per person

Equipment Types

Cooling coil: Water Heating coil: Electric Reheat coil: Electric

Baseboard heating type: None Supply fan type: Draw through Fan layout: Parallel

Heat recovery: None

Night cycle ventilation: None Dehumidifier: None

Plant Type

Chiller type: Centrifugal

Chiller condenser type: Air cooled

Chiller to coils water loop pumps: Constant primary, variable secondary

Performance Values

Supply fan efficiency: 0.70 Supply fan motor efficiency: 0.90

Cooling coil inlet setpoint temperature: 15o_C

Heating coil inlet setpoint temperature: 12o_C

Chiller full load COP: 3.8

Chiller cold water setpoint temperature: 7.2o_C

Please indicate any fields that you disagree with, suggest a better value, and provide reasoning(s) why you disagree.

Type text in the box below

If nothing is typed in the box above, it will be assumed that you agree with all of the values presented for this system.

Q5.0 –

Split System Heat Pump, poor energy efficiency building

From the previous round of questions, these values were identified as being likely for a split system heat pump system in a commercial building that has poor energy efficiency.

General Aspects

Percentage of building serviced: 51% - 75% Controls: Thermostat

Outdoor air supply rate: 10 L/s per person

Equipment Types

Cooling coil: DX Heating coil: DX

Supply fan type: Draw through Heat recovery type: None Night cycle ventilation: None Humidifier: None

Performance Values

Supply fan efficiency: 0.70 Supply fan motor efficiency: 0.90 Cooling coil full load COP: 4.2 Heating coil fuel load COP: 4.0

Please indicate any fields that you disagree with, suggest a better value, and provide reasoning(s) why you disagree.

Type text in the box below

If nothing is typed in the box above, it will be assumed that you agree with all of the values presented for this system.

Q6.0 –

Packaged Air Handling Unit, poor energy efficiency building

From the previous round of questions, these values were identified as being likely for a packaged air handling unit system in a commercial building that has poor energy efficiency.

General Aspects

Percentage of building serviced: 76% - 100% Controls: Thermostat, BMS

Outdoor air supply rate: 10 L/s per person

Equipment Types

Cooling coil: DX Heating coil: Electric

Supply fan type: Draw through

Supply fan operation: Variable/Cycling

Performance Values

Supply fan efficiency: 0.70 Supply fan motor efficiency: 0.90 Cooling coil full load COP: 3.0

Please indicate any fields that you disagree with, suggest a better value, and provide reasoning(s) why you disagree.

Type text in the box below

If nothing is typed in the box above, it will be assumed that you agree with all of the values presented for this system.

Q7.0 –

Fan Coil Units, poor energy efficiency building

From the previous round of questions, these values were identified as being likely for a fan coil units system in a commercial building that has poor energy efficiency.

General Aspects

Percentage of building serviced: 76% - 100% Controls: Thermostat, BMS

Outdoor air supply rate: 10 L/s per person

Equipment Types

Cooling coil: Water Heating coil: Water

Plant Types

Chiller type: Centrifugal

Chiller condenser type: Air cooled

Chiller to coils water loop pumps: Constant primary, variable secondary Boiler fuel type: Natural gas

Boiler to coils water loop pump: Variable (Intermittent)

Performance Values

Supply fan efficiency: 0.70 Supply fan motor efficiency: 0.90

Cooling coil inlet setpoint temperature: 10o_C

Heating coil inlet setpoint temperature: 50o_C

Chiller full load COP: 2.5

Chiller cold water setpoint temperature: 6o_C

Boiler efficiency: 0.80

Please indicate any fields that you disagree with, suggest a better value, and provide reasoning(s) why you disagree.

Type text in the box below

If nothing is typed in the box above, it will be assumed that you agree with all of the values presented for this system.

Click on the >> button to progress

Q8.0 –

Any Issues

Were there any issues regarding completion of this survey? If yes, please note what the issues were.

Yes No

 

Issue(s): __________________________

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Thank you for your time in completing this survey.

The results will be analyses and complied into the third round of questions which will form a consensus on the equipment types and values, you will be contacted with this soon.

If you have any further questions or would like to get in contact, please contact me at:

[email protected]

Thank you.

Anthony Gates

Master of Building Science student Victoria University of Wellington

Appendix G - EnergyPlus objects used for modelling HVAC systems

To model the HVAC systems in EnergyPlus, the HVAC template objects within the idf editor were used. By using these objects to model the HVAC systems, the modelling process is simplified and the chances of receiving modelling errors is reduced. Further explanation of how to use the HVAC template objects is documented in the EnergyPlus Input Output reference document (EnergyPlus, 2010. pg1950).

This appendix provides a list of all objects used in EnergyPlus to model each HVAC system. Appendix I contains all of the input values that are associated with these modelling objects.

In document COMISIÓN NACIONAL DE ENERGÍA (página 94-104)