In recent years, with the continuous upgrading of heating products and people's pursuit of high-quality life, energy-saving and environmentally friendly home decoration heating has attracted more and more people's attention. Especially for owners of large villas, in the face of complex and diverse house types, choosing the right heating method has become a major problem for them. The choice of heating method is directly related to the comfort and quality of home life, so how to choose the right heating method has become the focus of attention of the owners.
Background introduction of the project case
The villa of the owner, Mr. Zhang, is a double-detached villa, divided into three floors above ground, with a total housing area of 340 and a family of three.
Owner's needs: Mr. Zhang's family wanted to replace an excellent wall-hung boiler to achieve precise control of the temperature in each room and bring ideal heating results. At the same time, they expect the temperature of the domestic hot water to remain constant to meet the needs of multiple water points throughout the villa. In order to further enhance the comfort of the living environment, they also wanted this wall-hung stove to be paired with equipment that can purify the indoor air and promote air circulation, so as to create a fresh and pleasant living space.
Analysis of the pain points of the system before the transformation
The original system adopts French Chabey 24kw ordinary wall-hung boiler + Ao.Smith vertical gas volumetric water heater is equipped with floor heating on the first floor, and fan panel heating is used on the second and third floors. Mr. Zhang, the owner, reported that due to the large area of the house, the heating effect of the wall-hung boiler is not ideal during the winter heating period, and the heating temperature of each room cannot be guaranteed, and the bath water temperature is also hot and cold, which is unstable.
After diagnosis, Gyeongdong Nabian technicians found 3 core problems:
1) The power of 24kw is not enough to support the heating demand of 340.
2) The heating mode of the fan coil unit can easily lead to the uncomfortable feeling of "dry head and cold feet".
3) Compared with instantaneous gas water heaters, gas volumetric water heaters are prone to the problems of large fluctuations in bathing water temperature, cold and hot compared with instantaneous gas water heaters. If the water heater starts and stops frequently, the energy loss is large. According to the data provided by Mr. Zhang, the original system has been used for 9 years, and the annual air consumption is as high as 4,600 cubic meters, and the operating cost is too high.
Project planning
After the re-planning of the overall layout of the villa by the designers of Qingdong Nabian, the owner finally chose the "feng shui heating system" of Qingdong Nabian for renovation. The 31KW fully premixed condensing wall-hung boiler of Qingdong Nabian NCB700 is equipped with a 200-liter regenerative water tank and three layers of floor heating at the end, so that the warmth spreads to every corner. The design team included the need to improve indoor air quality as one of the key design improvement links, and thoughtfully introduced the Qingdong Nabian fresh air system TAC300, which is equipped with one on each of the three floors of the villa to purify the air and remove odors, and create a healthy and fresh air environment for the interior.
Demonstration of project case results
The new heating system adopts the heating method of floor heating, the heating water heated by the wall-hung furnace flows into the floor heating pipe, and the heat is evenly radiated to the room through the ground, warming every corner, which can easily meet the heating needs of each room on the third floor of the villa. Floor heating has many advantages such as comfort and hygiene, high efficiency and energy saving, concealed installation, free adjustment, good stability and easy managementIn addition, this "soles heated" heat dissipation method is also in line with the body's health concept, which helps to promote blood circulation and relieve fatigue.
NCB700 is a fully premixed condensing wall-hung boiler for heating and hot water, and its excellent performance in all aspects makes it favored by users. Different from traditional condensation, this NCB700 adopts a unique "co-directional" condensation technology, inverted combustion structure, which can effectively avoid the corrosion of acid condensate, and at the same time, the latent heat exchanger can be washed out during the condensate discharge process to achieve the effect of self-cleaning. While prolonging the service life of the product and reducing maintenance expenses, it can also ensure long-term and stable thermal efficiency and save gas consumption for a long time. The heat exchanger is made of Qingdong patented stainless steel, which is corrosion-resistant, anti-erosion, anti-stamping, long-term efficient operation, and its service life is 38-4.5 times.
NCB700 itself has a strong hot water ** capacity, a high-efficiency metal fiber burner, which can achieve domestic hot water 05 Precise temperature control. In order to meet the domestic hot water demand of multiple toilet points in large-area villa housing, it is equipped with a 200-liter regenerative water tank, which can accurately control the water temperature through coil heat exchange, intelligent temperature sensing, and ensure the constant temperature hot water demand of multiple water points in the whole villa. In addition, in order to improve the comfort of hot water use, the zero cold water function can also be achieved through the return pump and temperature sensor, the temperature signal line is connected to the return pump, the water temperature in the pipeline is lower than the set value (40), the return pump will start, and the water in the pipeline will be pulled back to the coil water tank for heating, so as to realize the heating of domestic water and improve the water experience.
In order to solve the contradiction between the lack of indoor air circulation and the close of doors and windows to prevent indoor heat loss, the fresh air system of Qingdong Nabian is installed on the third floor of the villa. The internal full heat exchanger uses the exhaust air and the incoming fresh air to exchange heat and humidity ** energy to achieve energy saving effect. The fresh air outside is filtered layer by layer through three layers of filters, and the negative ion function purifies the air, so that the indoor remains in a forest-like fresh state.
Not only is the heating effect and hot water experience optimized, but also in terms of energy saving, the new system has a total annual gas consumption of 2,500 cubic meters after one year of useCompared with the previous heating system, about 2,100 cubic meters of gas are saved every year, the energy saving effect is remarkable, and the investment in operating costs is greatly reduced, which is well received by the owner.
Technology creates a green life, and intelligent control makes life simpler. In order to make room temperature control more convenient, an indoor thermostat is installed in each room, and different indoor temperatures are set according to different use cases, and heating is provided on demand to avoid waste. In addition, it can also be connected to a mobile phone to achieve wifi remote intelligent control, operate and set on the mobile phone, and adjust the temperature with one click, which is convenient and trouble-free.
After the renovation of the floor heating system and the addition of the Qingdong Nabian fresh air system, Mr. Zhang's family has been using it for a year, the heating effect is excellent, the hot water experience is also very satisfied, and the indoor fresh air environment also makes the family feel comfortable. Qingdong Nabian has always adhered to the concept of providing users with comfortable homes, and is committed to providing energy-saving and comfortable heating solutions for more users, and building a warm harbor for more users.