The above contents are some proposals in order to save power during times of energy shortage today. Its characteristics are still achieve power savings as the other measures with no (or very little cost) initial capital investment. This is very suitable with a very tight budget situation in our country. Of course, adjusting working style, struggling with old habits are hard work and need a lot of time, but if the management staff at all levels and all our people agree and determine to implement, a considerable amount of energy will be saved for the national economy in coming time.
There are plenty of power-saving measures in administrative and career areas, including do not cook in organization, turn off the fan when working out of the room, turn off air conditioners etc. These measures have been talking a lot on public medias but effectiveness is not high because the proposed regulations do not have regular supervision and technical solutions which require quite large initial investment.
Here we would like to introduce some simple solutions, inexpensive but effective in saving power in administrative and career areas:
1. Use of air conditioner:
In the summer, electricity which is used for air conditioner takes the largest proportion of the total load of administrative and career areas (estimated at 70-80%). Staffs still have a habit of turning off fan when turning on air conditioner. This is a pretty big waste of energy. As we have already known, the surface cooling phenomenon is largely determined by cooling coefficient. If the air is still, this coefficient is very small, but if the air moves (because of fan), this coefficient will be quite large. Because of large cooling coefficient, though temperature is set higher, people still feel cool. If we regulate that in summer all administrative and career organizations must run air conditioner with fan (low speed), we can save 10-15% power for cooling. This is a fairly large amount of budget savings. Moreover, the above power can be used for other necessary purposes.
To support the above-mentioned measures, the State should promulgate regulations for civil servants’ clothes in summer. Our country is a tropical country, hot weather, but the senior and management staffs often have a habit of wearing a suit and tie to have more “serious look”. This habit contributes to use more power. If summer all officers and employees are wearing uniform shirts in the office (take off jacket when come to room), it also reduces power consumption further. Japan is an Asian power, the climate is quite cold, but they were soon aware of this issue. The prime minister in the previous term, Mr. Koizumi, has exemplarily done first. So why do not we learn them? It’s not a lack of power in Japan, but only because they have more awareness than ours in power saving.
Two-way air conditioners must be used properly. Energy used for heating of this machine is quite large, not less than its cooling power. In winter in our country, daytime temperature is average around 15 ° C; this is not a too low temperature to use heaters. So, in the tropical climate of Vietnam and the current power shortage situation, it is best to prohibit running heaters in winter. If all employees are please doing this, it will save additional amount of power to the grid which still has shortcomings for the nation.
2. Restricting or prohibiting use of electricity for purposes other than work:
In the advanced industrial countries, production disciplines are iron disciplines. In working hours, employees must not do anything other than their primary functions. In Vietnam, we are not. During working hours, there are some employees chatting, drinking tea, playing computer games or monitoring stock market etc. During lunch breaks, there are some employees using electric stove to cook their favorite meals. All of the above negative habits need to be terminated. This is especially necessary when Vietnam has officially joined the WTO, a playground where serious and scientific working style is applied to expect to survive in the global competition. Above phenomenon have caused considerable waste of energy. Should we have stricter and more specific regulations with clear supervision and avoid call for power saving in general.
3. Regulation on shutdown socket after work:
There are two ways to disconnect power to the equipment. The first way is to press the switch button; the second is to unplug the power wire from the socket. In the first way, equipment is not absolutely disconnected because the leakage current is still running through switch. Only in the second way, equipment is absolutely disconnected.
In administrative and career organizations of a country, there are thousands of household electric appliances of such style, such as: computers, communication equipment, photocopiers, electric fans, table lamps ... If all of them are unplugged from socket after work, it will save a significant amount of power. Moreover, because Vietnam is a country with a humid climate, energy consumption due to leakage currents are much higher than the countries in dry climate.
For computers, during the current computerization, in average, each administrative organization must have at least a few dozen computers. In the whole country, this number can be up to significant numbers. Normally, after finishing work, we usually shutdown by clicking Shut Down, turn off the screen, then go home. The user was assured that the entire machine was shut down. The reality is not so! When the CPU signal is turned off, the screen was totally dark, but there is still a small electrical current running through the machine. It's not a leakage current but a standing current. Though its intensity is not large but its total value is a significant value causing wasted power in vain. For other electronic devices with remote controls such as TV, lights, fans should not let in the standby mode (red light). Each standby lamp circuit consumes 8W, equivalent to a compact light 7W. The total energy consumed by standby lamp in the country is a pretty big number.
Recently, in some European countries have conducted this in a pilot project. They have ordered administrative and career areas and offices of enterprises, before leaving working room, all power wires of equipment must be unplugged. As a result, power consumption is reduced to 10% monthly.
If this resolution is applied in our country, we can do in a more scientific manner. We should separate power supply to the socket in the organization into a separate circuit, with a general circuit breaker. After working time, an assigned operator will shut down general circuit breaker and turn on it at the beginning of working time. This is the most complete way to avoid wasteful phenomena in the lunch break that we have discussed in Section 2.
4. Arrangement of reasonable lighting in working room:
In advanced countries, lighting in office must comply with the regulations of the State. There are rooms have high light levels, and other room just enough lighting. Room needs high lighting level such as engineering, graphic rooms, halls etc. room has just enough lighting as storage, reception rooms, lounge, toilet room etc. This lighting is measured by lux meter but not by visual estimation in our country.
If rational layout of lighting is made, power consumption in administrative and career areas will be reduced from 1-2%.
5. Power savings through sanctions:
The last issue is that power savings can also be made well through sanctions. For this, we should build a consumption norm to administrative and career organizations nationwide.
When there is reasonable norm and everyone accepts it, the State does not necessarily have the daily checks but only sanction is enough. At that time each administrative and career organization has a certain flat rate for electricity. The mare organization can be divided into several major functional blocks to carry out this work. If in the end of month, the organization which can fulfill its workload but uses less electricity will be rewarded appropriately. If using more, their salary fund will be deducted. If there is such regulation, everybody will intentionally save power or remind each other to save power without any calling.
(Source : LE DINH DUONG (www.hvacr.vn))