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Etichetă: energy efficiency

4 posts

Author: Vlad Caragea, EnergyPal-TimePal Romania and FMS

The latest studies show that we spend more than 80% of our time indoors – at home, at work, at school, etc. The quality of the air we breathe has an effect on our well-being and productivity. The World Health Organization has classified indoor air pollution as the 4th risk factor in lowering life expectancy. The main pollutants of indoor air are: radon, cigarette smoke, gases or particles from the combustion of fuels, chemicals and allergens.

 Ventilation system with heat and humidity recovery

An effective solution for improving indoor air quality is ventilation. The optimum solution is the use of a ventilation system with heat and humidity recovery. This system provides fresh, filtered air without heat loss in homes. The system allows simultaneous inlet and outlet of air without mixing the two streams.

An air / air heat exchanges is used to recover heat and humidity. The airflow that is discharged from the home gives up some of its heat to the fresh intake air flow. This heat exchange is done in the heat exchanges.

The vicious air from the bathrooms and the kitchen is exhausted through a pipe and fresh air is introduced into the rooms. The pipe through which the air is conveyed must be round in the case of residential buildings in order to reduce the operating noise.

The circulation of the two streams is represented here:

Benefits and high reliability through a secure technical solution

The system has high reliability because the only moving parts are fans that provide air circulation.

It is recommended to use an automated heat recovery unit for efficiency and comfort.

It is obligatory to filter the two air flows:

  • Fresh air should be filtered to reduce the intake of unwanted substances in a home
  • Damaged air must be filtered to avoid particulate matter on the heat exchange. Deposits decrease the quality of the heat transfer.

In this way the following benefits will be obtained:

  • The indoor air is permanently refreshed which leads to a high quality of life
  • Reduces the energy consumption required for heating and cooling by up to 25%
  • The optimum values ​​for relative humidity and temperature are ensured

Higher benefits at much lower costs

For a house with an area of ​​100 m2 with a thermosystem considered average on the Romanian market and a number of 4 residents, the cost of electricity is about 200 RON / year, and the replacement time of the filters depends on the degree of pollution in the area where the house is located. The operating costs are relatively low and they consist of the cost of electricity and filter replacement.

On average, the annual price of the filters is 400 RON / year for an area where the pollution is minimal and can increase up to 800 RON / year in the center of cities or areas with high traffic. Replacing them is simple and can be done by anyone. Using automation for this system will have considerable benefits in terms of quality of life and energy consumption.

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About EnergyPal

The founder of the EnergyPal brand, dipl.ing. Lucian Anghel, has a vast experience in operating and maintaining buildings over 3,000,000 sqm in Romania. The experience gained over 15 years of facility management has led to launching EnergyPal, an energy efficiency concept, whereby customers benefit from the most cost-effective solutions for building operation costs. The EnergyPal team is staffed with over 8 years of experience in facility management and technical assistance. The staff is specialized in the fields of: smart metering, HVAC (heating and air conditioning), automation, insulation, lighting, preventative and predictive maintenance. The solutions and technologies used have the effect of reducing the operating costs of the beneficiaries, which allows for the financing of the savings made. Learn more about us on: www.energypal.ro

Smart building and their automation have become increasingly heard in the field of construction. The world is looking for the latest cool gadgets to “smartly activate” their homes. Home builders and real estate developers are beginning to seriously consider adding smart home and building functions to their new residential and commercial developments. The giants Amazon, Google and even Apple are investing in this multi-billion dollar industry to make our homes smart. In addition to the WOW factor, what are the benefits and practical applications of technologies for smart homes.

The Internet of Things (IoT) brought to the level of households must be economically viable. This means that this expense must contribute to the overall economy of the household. In other words, IoT technology must become a profit center and not a cost center for our budget. For example, when the fluorescent light bulb was first introduced to the market, many people were shocked by its cost. Only when the new fluorescent bulbs have consumed only part of the energy of conventional incandescent bulbs, but it lasts several times longer, has the economy of this new technology made economic sense. This new technology has contributed to the “profit center” of the household budget, allowing us to save more.

In the IoT market of smart homes and consumers (CIoT), there are many connected devices that contribute to the end-user profit center. While each element itself functions as designed and contributes, the true value of the Internet of Things will be attained as technology matures and devices are integrated between them and driven by a “brain with artificial intelligence”.

Artificial intelligence (AI) technology will become the ultimate engine of energy efficiency and sustainability in the coming years. Here are some household appliances that will make a big difference in energy efficiency:

  • Smart thermostats
  • Water heaters / boilers
  • Lighting system
  • Window blinds

Smart thermostats allow remote monitoring and control of the temperature of heating and cooling systems. The advantage of using a smart thermostat, as opposite to an old-fashioned “dumb” thermostat, is that we can program how we want to raise or lower the temperature from a distance. These thermostats will automatically provide energy consumption analysis and a report to show you how much money we have saved each month.

Smart water heaters allow us to raise and lower the water temperature in our home boiler wherever we have an internet connection. For example, suppose we take a shower every evening at 9pm. We can set the boiler to start water heating at 20:00. so when you get home the water is already hot. The rest of the day the hot water heater is off! Thus, energy costs decrease significantly. Suppose, at mid-day, while you are away from home, the program suddenly changes and we leave the city for three days. With the click of a button, we remotely change the programming of the boiler and it will be stopped until we get home.

The intelligent lighting system has sensors that allow the light to be turned on or off depending on the presence of people in the room. The lighting systems of this allow us to override the sensor programming, for example, to light the lights for security purposes. An intelligent lighting system will notify us by text message if a light has been left on. The energy savings brought by a smart lighting system can be very large.

Modern window blinds are not only used for protection or decorative purposes but they contribute to energy savings. For example, the light sensors on the outside of the blinds will automatically open in the morning, to give us natural sunlight, so that we do not need to turn on the lights when we wake up. We can also use thermal blinds that insulate windows in both hot and cold weather, allowing us to have a much more efficient air conditioning system. The blinds can be equipped with outdoor solar panels, so we don’t even have to pay for the energy needed to open and close them. Of course, such blinds allow us to open or close them remotely. For example, suppose we left town for a week and left the blinds closed to keep the house cool and save energy. After about a day we realize that the plants in the house will die if they do not receive sunlight for a week! With the mobile phone we send a simple text message to the blinds: “Open blinds for the living room” and the problem is solved.

The latest advances in technology have immense potential that people can benefit from by increasing the energy efficiency of their households. Using the latest IoT technologies for the smart building, not only do we save money, but we also contribute to reducing pollution, which is good for people, the environment and the planet.

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About EnergyPal

The founder of the EnergyPal brand, dipl.ing. Lucian Anghel, has a vast experience in operating and maintaining buildings over 3,000,000 sqm in Romania. The experience gained over 15 years of facility management has led to launching EnergyPal, an energy efficiency concept, whereby customers benefit from the most cost-effective solutions for building operation costs. The EnergyPal team is staffed with over 8 years of experience in facility management and technical assistance. The staff is specialized in the fields of: smart metering, HVAC (heating and air conditioning), automation, insulation, lighting, preventative and predictive maintenance. The solutions and technologies used have the effect of reducing the operating costs of the beneficiaries, which allows for the financing of the savings made. Learn more about us on: www.energypal.ro

When planning a replacement for HVAC equipment, you have three strategies available to ensure that the new equipment works as efficiently as possible.

By the time when most commercial building owners decide to upgrade their HVAC systems, cooling equipment, and boilers, existing equipment has been in operation for over 20 years. From a technological point of view in two decades, a lot of changes when it comes to high-efficiency systems, based on modern technology of building automation. That is why it is good for building owners to know a few strategies that will allow them to optimize HVAC equipment throughout their lifetime.

Most states have adopted an Energy Code – either the International Energy Conservation Code (IECC) or ASHRAE 90.1 – which stipulates the obligation to implement energy monitoring and conservation strategies for HVAC installations.

Low-cost and high-impact control measures needed to optimize HVAC equipment include:

  1. Optimize the on-off cycles of HVAC equipment

The objective is to save energy by creating start-stop cycles of the air conditioning equipment for the periods when the spaces in the building are not used (for example office spaces during the night). Since it is not at all easy to determine the right time to change the setpoints (reference temperature) of the equipment, and often there is no guarantee how hot or cold it will be in each space during that period, it is indicated that starting and optimum shutdown should be calculated for CTAs (Air Treatment Plants) and be automatically controlled by controllers (DDC).

This calculation is based on the difference between indoor and outdoor air temperatures. Sophisticated building automation systems, such as BMS, can “learn” the thermal need of a building to provide even more accurate programming for resetting temperature setpoints while maintaining optimal temperatures during the occupancy period.

  1. Reset the water temperature (cold/hot)

By changing the set point of chilled water, or the temperature value of hot water from boilers, a building will save a few percents of total energy consumption. The higher the supply of fresh air from the CTA, the higher the demand in the building for cooling or heating. If all the volts are partially closed, there is the possibility to change the set point of the chiller or boiler installation, respectively to make the temperature higher or lower, in the sense of saving energy.

If the temperature change is significant, the boiler or chiller will consume less but may require a significant increase in the consumption of the recycling pump to maintain the indoor climatic parameters. In general, chillers and boilers are the largest energy consumers in a commercial building. Ask the designer to evaluate the amount of energy the boiler consumes at different hot water supply temperatures, about the energy consumption for the pumps.

  1. Change the temperature and pressure setpoints

Modern CTAs with variable volume via DDC controllers are often required for both air temperature and pressure change. Changing the pressure, but also the temperature can be done by detecting how “open” the valves are, translating directly into how much cooling/pressure a particular season requires. The purpose of the pressure change is to reduce the fan speed in the CTA, while changing the temperature reduces the demand from chillers or boilers, to save energy.

When the valves are more than 65% open, significant changes in pressure and temperature will occur. Determine which system consumes the most energy and which modification ensures the largest savings, so that the controllers can handle the two changes properly.

As the energy requirements are updated every few years, it is advisable to ask the design engineers to consider how the latest energy code requirements can improve the efficiency of HVAC equipment. Many design engineers use an ROI calculated for less than five years, while HVAC infrastructure providers are confident they will work for 20 years.

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According to the study “Energy efficiency in Romanian companies” carried out by EnergyPal, in Romania, 69% of companies say they have not implemented a smart metering system for main equipment, 17% do not know, and only 14% took this step towards energy efficiency. This situation is present in 46% of respondents in construction & real estate, 77% in food & agriculture, 64% in industrial production, 70% in utilities & energy and 66% in transportation industry sector.

“The Energy Efficiency Study in Romania 2018 is based on our intention to disclose the up-to-date picture of how both the legislative framework and the companies’ performance objectives are reflected in this approach. Beyond the data and graphs it contains, the study indicates a relatively low level of awareness of the role that energy efficiency measures play in the company’s sustainable operation. We will continue to conduct this study in the years ahead, from the current pilot version to a more elaborate version, to give even more value to its content,” says Lucian Anghel, Founder and CEO, EnergyPal Romania.

Most of the respondents (62%) say that energy efficiency means the ratio between performance, service, goods or energy and the energy used for that purpose. On the other hand, only 14% identify this concept with the capability to perform an action with minimal energy consumption.

The current level of consumption monitoring

In 55% of companies the current consumption monitoring level in the company is only achieved through a general utility meter, 34% have manual readings internally. Only 17% have detailed internal readings with automatic reading, and 7% have exportable consumption data in Excel. Only in 7% of companies we find integrated energy consumption with production monitoring.

Policy to reduce energy loss

It is somewhat gratifying that 66% of respondents say they have a policy of reducing energy loss within the company. At industry level, such a policy is 41% of professional service companies, 46% of financial services, but 66% of industrial production sector.

Policy to have cost-effective utilities

Not less than 7 out of 10 companies, of the respondents, say they have a policy to increase efficiency of the utility costs. At industry level, the best situation is in the industrial production sector (67%), followed by the construction & real estate industry (64%) and the utilities & energy industry (58%).

Assigning the role of Energy Manager

If 38% of the respondents say they have a responsible person in the company that deals with the energy efficiency plan (energy manager), the fewest companies with such a role are from transportation sector (17%), followed by production industrial (22%) and food & agriculture (26%) industry sector.

Programs to drive energy efficiency

Only 3 out of 10 companies say they have invested in a program aimed at driving energy efficiency. At the industry level, the fewest companies with such investments are in construction & real estate (20%), followed by food & agriculture (29%) and professional services (32%) industry.

Unfortunately, 31% of the industrial production companies are not aware of the obligations of the economic agents according to Law 121/2014 on energy efficiency, and the percentage rises to 50% in the case of construction & real estate.

“In most cases, facility management actions intersect with those of improving the energy efficiency of buildings. Buildings need both sets of services, integrated into a coherent operating program. This can provide additional benefits in terms of reliability and sustainability, as well as a higher use experience for end-beneficiaries. In future editions of the study, we will also focus on the synergy that integration of both types of services brings about and the specific ways in which companies that have this strategy have additional benefits,” says Alexandru Theodor Miculaş, Head of Facility Management Services, FMS Romania, co-author of the study.

You can download our study from here:

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About the survey

The EnergyPal survey explores the perceptions of executives and managers about the barriers and benefits of energy efficiency in companies in Romania. The questionnaire, which received 175 responses, was applied between 10 February 2018 and 30 March 2018. Energy efficiency refers to how companies can get the same benefit (light, heating, movement) using less energy. The monthly consumer average used by respondents is as follows: 21% at 100 euros – 1000 euros, another 21% between 10,000 euros – 25,000 euros and 41% over 25,000 euros. 41% of respondents come from companies with a turnover of more than EUR 100 million, 14% of companies with a turnover of EUR 50-100 million, 7% of companies with a turnover of EUR 10-50 million, 21 % with turnover between EUR 2 and 10 million and 17% below EUR 2 million turnover. 27% of the respondents are CEO / President / Chief Executive Officer, 7% Vice-President / Executive Director, 19% Administrative Director, and 17% Technical Director.

About EnergyPal

The founder of the EnergyPal brand, dipl.ing. Lucian Anghel, has a vast experience in operating and maintaining buildings over 3,000,000 sqm in Romania. The experience gained over 15 years of facility management has led to launching EnergyPal, an energy efficiency concept, whereby customers benefit from the most cost-effective solutions for building operation costs. The EnergyPal team is staffed with over 8 years of experience in facility management and technical assistance. The staff is specialized in the fields of: smart metering, HVAC (heating and air conditioning), automation, insulation, lighting, preventative and predictive maintenance. The solutions and technologies used have the effect of reducing the operating costs of the beneficiaries, which allows for the financing of the savings made. Learn more about us on: www.energypal.ro.

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