GreenEcoNet

Connecting SMEs for a green economy

Energy Data Management Solutions: Case for Hotel

Danai Manoli's picture

Innoven’s Building Monitoring platform offered a comprehensive analysis of the building’s loads and an evaluation of current practices, after a period of only 2 months. Builting Info:
- Average Energy Consumption:4.5GWh per year
- Peak Load 250 kW
- Average Energy Bill: 400.000 $ per year

This case was implemented in a 310 guest room, 150,000 sq. feet hotel, with an average annual consumption of 4.5 GWh, which is located in the East Coast, U.S.
A total solution of energy monitoring and management was proposed, focusing on maximizing building’s assets and employing a sustainable energy strategy.
Innoven’s Building Monitoring platform offered a comprehensive analysis of the building’s loads and an evaluation of current practices, after a period of only 2 months. The hotel managers had the opportunity to assess energy load trends in the facility and estimate potential savings from different types of interventions.

Key principles
• Real time measurement of energy use using Innoven metering technology
• Advanced analytics with scenario planning, weather correlations etc.
• Real time intervention to address specific situations
• Billing analysis
• Staff Awareness & Green CSR

Facts
The hotel is operating all seasons, and has a high seasonal impact in energy consumption, especially during summertime. The facility includes a restaurant, a swimming pool with a bar, a gym and two conference halls.

Monitoring
A complete metering plan was established which included:
• Central Load
• Rooms & Common Spaces Loads
• HVAC Load
• Kitchen & Laundry Loads
• Conference Rooms Loads

Analytics
According to energy data collected a distribution of energy per end use was constructed. HVAC units and room & common spaces loads had the largest impact in the overall consumption of the building.
A weather correlation of the HVAC consumption indicated potential flaws in the operation of the HVAC equipment. This assumption was validated with a walk through audit of the building, which revealed improper adjustments of controls and unmet levels of comfort in common spaces. A scenario of adjusting control settings was performed and despite distribution load reduced significantly, cooling sources remained at the previous consumption levels.
The inquiry concluded that the source units of the facility are unable to meet cooling load demands. This fact, in addition to the low power factor measured, made the need for equipment maintenance or upgrade seem urgent.
Given the load percentage of rooms and common spaces it was concluded that a new management strategy could provide significant savings.
Analysis of the meeting halls’ loads indicated a 10% energy waste from poor operation and that of the laundry and the kitchen gave a clear picture to the managers on how much energy is consumed for these processes.
Billing analysis indicated exceptionally high load factor and a high correlation of energy consumption with cooling degree days. Peak demand, from measured data, appears mostly during midday and is correlated with external temperature.

Energy Saving Opportunities
Operations
Management of lighting equipment and plug loads for meeting halls and common spaces, including the gym, can offer low cost energy savings. Furthermore, adjustments of thermostats in common spaces and periodic check of thermal comfort will be beneficial both for energy bills as for residents.
With potential savings that can exceed 20%, HVAC units’ operation and under-performance need to be further investigated. Moreover, new management of process in laundry rooms and the kitchen, while measuring the impact in energy consumption and demand, can further reduce energy costs.

Retrofits
Given the current operation schedule of the facility and the lack of management strategy, a lighting retrofit in meeting halls and common spaces can provide significant savings. Pool’s load impact has to be studied separately in order to calculate the most efficient strategy for management or retrofit.

Alerting
Using the online threshold alerting tool, the hotel manager can have a notification mechanism regarding equipment running overtime or underperforming. In addition, benchmarking consumption, especially during night-time, can provide no cost energy savings.

Awareness
Up to 15% of energy savings can be achieved through awareness, by altering staff’s behavior and current practices. The key issue in raising awareness of the staff regarding energy saving issues is to get everyone involved. Using Innoven’s Ingage platform, the hotel manager is able to establish sustainability teams, get real time fault registration (faulty lamps, thermal comfort issues etc.) and engage staff in proper adjustment of control settings and facility’s management issues. Moreover, on site monitors of energy consumption and current action’s impact through dedicated KPI’s can help externalize the results to the public.

Key principles
• Real time measurement of energy use using Innoven metering technology
• Advanced analytics with scenario planning, weather correlations etc.
• Real time intervention to address specific situations
• Billing analysis
• Staff Awareness & Green CSR

Facts
The hotel is operating all seasons, and has a high seasonal impact in energy consumption, especially during summertime. The facility includes a restaurant, a swimming pool with a bar, a gym and two conference halls.

Monitoring
A complete metering plan was established which included:
• Central Load
• Rooms & Common Spaces Loads
• HVAC Load
• Kitchen & Laundry Loads
• Conference Rooms Loads

Analytics
According to energy data collected a distribution of energy per end use was constructed. HVAC units and room & common spaces loads had the largest impact in the overall consumption of the building.
A weather correlation of the HVAC consumption indicated potential flaws in the operation of the HVAC equipment. This assumption was validated with a walk through audit of the building, which revealed improper adjustments of controls and unmet levels of comfort in common spaces. A scenario of adjusting control settings was performed and despite distribution load reduced significantly, cooling sources remained at the previous consumption levels.
The inquiry concluded that the source units of the facility are unable to meet cooling load demands. This fact, in addition to the low power factor measured, made the need for equipment maintenance or upgrade seem urgent.
Given the load percentage of rooms and common spaces it was concluded that a new management strategy could provide significant savings.
Analysis of the meeting halls’ loads indicated a 10% energy waste from poor operation and that of the laundry and the kitchen gave a clear picture to the managers on how much energy is consumed for these processes.
Billing analysis indicated exceptionally high load factor and a high correlation of energy consumption with cooling degree days. Peak demand, from measured data, appears mostly during midday and is correlated with external temperature.

Energy Saving Opportunities
Operations
Management of lighting equipment and plug loads for meeting halls and common spaces, including the gym, can offer low cost energy savings. Furthermore, adjustments of thermostats in common spaces and periodic check of thermal comfort will be beneficial both for energy bills as for residents.
With potential savings that can exceed 20%, HVAC units’ operation and under-performance need to be further investigated. Moreover, new management of process in laundry rooms and the kitchen, while measuring the impact in energy consumption and demand, can further reduce energy costs.

Retrofits
Given the current operation schedule of the facility and the lack of management strategy, a lighting retrofit in meeting halls and common spaces can provide significant savings. Pool’s load impact has to be studied separately in order to calculate the most efficient strategy for management or retrofit.

Alerting
Using the online threshold alerting tool, the hotel manager can have a notification mechanism regarding equipment running overtime or underperforming. In addition, benchmarking consumption, especially during night-time, can provide no cost energy savings.

Awareness
Up to 15% of energy savings can be achieved through awareness, by altering staff’s behavior and current practices. The key issue in raising awareness of the staff regarding energy saving issues is to get everyone involved. Using Innoven’s Ingage platform, the hotel manager is able to establish sustainability teams, get real time fault registration (faulty lamps, thermal comfort issues etc.) and engage staff in proper adjustment of control settings and facility’s management issues. Moreover, on site monitors of energy consumption and current action’s impact through dedicated KPI’s can help externalize the results to the public.

Further details

How was the green solution financed?: