JPS60114654A - Method of heating spring water by power heat pump - Google Patents

Abstract

PURPOSE:To reduce the running cost by storing waste hot water of a bath room in a hot water storage tank and reutilizing waste hot water stored as heat source water of a heat pump. CONSTITUTION:Spring water 10 discharged from a pump 11 is supplied to a condenser 12 of the heat pump and a heat source water tank 13 concurrently used as a purifying tank (a heating insulating tank). Spring water which has been supplied to the condenser 12 is heated by the operation of the heat pump and supplied to a hot water storage tank 14. Waste hot water 18 from a bathtub 16 and a hot water tank 15 outside the bathtub is guided from an underground pipeline to the heat source water tank 13 concurrently used as a purifying tank via a drainage groove of a washing place of the bath room and the tank 13 is burried underground and is hermetically bonded with a heat insulating material. Spring water discharged from a pump 20 is cleaned in the tank 13 with warm water of about 35 deg.C mixed with waste hot water 18 from the spring and the bathtub, and is supplied to a heat pump evaporator 21 as clean warm water. After radiating within the evaporator, the temperature of the heat source water is reduced to about 20 deg.C, and then the heat source water is discharged into river 22.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of heating an anchor spring using an I-water heat pump.

Conditions vary depending on the hot spring area, but if the source is sufficiently hot and the temperature is high, there will be no problem, but apart from places where both hot springs and hot springs have excellent conditions, 8
``C heating will bring the bathing temperature to a suitable temperature, but if the heat source water is insufficient, ■If there is enough hot spring water, but the temperature of the source is lower than that of the bath water, drained hot water may be used as the heat source water. Conceivable.

In particular, in the case of ■, the coefficient of performance of the heat pump will be higher if the waste water (from the bathroom) is used rather than using the hot spring as the heat source water, and the power required will be reduced because the entire device will be made of small cedar. method is adopted.

Referring to the drawings, a detailed description of the present invention is provided by source 10 (
The water temperature is 29'C, the source is 80'4. It is possible to heat 60'7m1n of this, supply hot water to the bathtub and the first hot water, and use the remaining 20cm7 or as a heat pump heat source water. ~4
5-C) Since there was insufficient heat to raise the temperature in the bathroom, we decided to utilize the hot water drained from the bathroom.

The source 10 discharged from the source pump 11 is 60 shears, n
is the heat pump's compressor 12, and the other 2"/rnin
is separated and purified $2; is supplied to the IR heat source water tank 18 (insulated tank). 60'/ supplied to condenser 12
The source water at min% 29'C is heated to 45'C by the operation of a heat pump and supplied to the hot water storage tank 14. The tank 14 is installed not only to supply hot water to the bathtub but also to supply hot water 15 to the faucet. 1iJJchi60'/
By increasing the supply to the bathtub to 58 in and the remaining 2'/yn to the cost of inflow into the hot water storage tank of min. This is to deal with fluctuating loads.

Hot water is supplied to the bathtub 16 and the rising hot water 15 by a submersible pump 17 inside the hot water storage tank 14, so that it is possible to constantly supply 58'4 inches of hot water, and a maximum of 102'44 inches when the baths are in heavy use. The fJP hot water in the bathroom fluctuates while taking a bath, but the maximum is the sum of the overflow when taking a bath in item 11.
'/min is the overflow discharge when the tank is full.

These discharged hot water is led to the septic tank and heat source water from underground piping through the drain in the bathroom washing area.

The tank is buried underground, and its structure is made of stainless steel, with a large number of partition plates made of the same material inside the tank, the outer periphery of which is covered with sintered wood, and the outside of the tank is lined with concrete. In the cough tongue 1B, the above-mentioned # spring branch 2' knit is also connected to the inlet J.
In order to do this, a connection 19 (shown with broken lines) is arranged at the source pump discharge port via a flow rate adjustment valve.

In this embodiment, the hot water discharged from the bathroom is used as heat source water, so even when there is no hot water discharged from the bathroom, such as during operation after cleaning the bathtub, the heat source water tank is used. 13
Since 20" min of water is continuously flowing into the source, the amount of hot water stored can be reduced accordingly. Also, as an installation environment for this device,
In order to maintain a clean environment, bathroom wastewater must be purified.

These purification facilities are required to be easy to inspect in order to maintain their purification ability, and a purification device that satisfies these requirements has a simple structure.
One example is its high durability. In addition, it is desirable for this septic tank and heat source water tank 13 to have a high storage capacity and purification capacity for heat source water, and to have a structure (both the outlet and piping) that can handle large amounts of hot water discharged outside of normal times. By the way, j? The pump 20, which is arranged in the tank 13 in consideration of every 4 strokes, has an all-stainless steel submersible motor pump 29-(jO)#spring- and a drain water 18 from the bathroom (always 58'/ This is drought water of 35°C mixed with min '89"C), which is purified in the tank and supplied to the heat pump evaporator 21 as clean hot water. After dissipating heat in the evaporator 21, the heat source water is heated to 20"C. The waste becomes solid and is discharged into the river 22. 23 is a waste tank overflowing from the tank I8 (shown in the figure).

The feature of the present invention is that the waste water from the bathroom is stored in a hot water storage tank in which the septic tank is insulated and reused as the heat source water for the heat pump +111 heat device. The purpose is to reduce the running cost by operating the device at a high efficiency, and also to reduce the initial cost of the water heater M as a whole by integrating the septic tank and the hot water storage tank.

Generally, in the case of hot spring heating, if the hot water supply piping'q heat dissipation part is sufficiently insulated, the upper limit of the heat temperature (the temperature at which hot water is supplied to the bathtub) will be approximately constant regardless of the temperature limit, so The same is thought to apply to the temperature of the discharged water. Even in cold regions, if the bathtub and hot water supply piping to the bathroom are appropriately insulated, the temperature of the hot water discharged from the bathroom will drop by 5% compared to the temperature of hot water being supplied to the bathtub.
Since it is expected to be as low as ``C'', it can be said that it is a high-quality heat source water that is on the same level as the source of a hot spring resort with favorable conditions, where heating it by 5゛cj4 will bring it to the appropriate temperature for a bathtub.

The coefficient of performance of a heat pump increases as the evaporation humidity increases;
The higher the condensation temperature, the smaller it is. Therefore, it is a well-known fact that the smaller the difference between the two, the larger the coefficient of performance. Therefore, if the source temperature is lower than the temperature of the exhaust water in the bathroom, even if there is a source mm that can be used as a heat source water, The coefficient of performance of the heat pump improves when water is used as the heat source water because the evaporation temperature increases. Therefore, it is natural that the lower the source temperature, the greater the effect when using waste water as a heat source water.

Heat pumps that use only the source water as a heat source have a coefficient of performance that decreases in proportion to the decrease in source temperature, so the economic efficiency rapidly decreases, but when using waste water as a heat source, the evaporation temperature The rate of decline in the source temperature is slow, and a drop in the source temperature also lowers the condensation temperature, so the decline in the coefficient of performance (coefficient of performance) is greatly alleviated. As mentioned above, the waste water heat source is a high exergy (high quality) heat source, and is the point that it should be an essential heat source for heat pump heating devices (l) for low-temperature hot springs.

What is more important is that if you use waste water from the bathroom as a heat source, there will be no problem if the water is constantly overflowing from the bathtub, but for 1411 reasons such as heating the bathtub, etc. During the period before the bathtub becomes a bathtub (until the supply of drained hot water starts), the source water with lower humidity than the drained hot water must be used as the heat source water, so the evaporation humidity is low. This results in a drastic drop in operating efficiency, resulting in operation with a low coefficient of performance, and unavoidably having negative effects on equipment, such as shortening the life of the compressor. Therefore, it is of great significance to install a ``septic tank 1r heat source water tank'' that aims to provide a constant supply of heat source water without cutting off the supply of heat source water even during such times.These conditions are common in public baths, etc. The characteristics are different from the case where the hot water is circulated and filtered, and the fresh hot water from the source is heated and supplied to the bathtub, and the drained water from the bathroom is used as a heat source water and only the heat is used. The major lag point is that the heat source water, which has been deprived of heat, is not supplied to the bathtub, but instead becomes cold and drained.Therefore, the bathtub is always filled with fresh water at an appropriate temperature. As a method of heating hot springs, the original appearance of the hot springs is not lost at all due to the power of exchange with the old hot springs (the power that causes the current state to be constantly fffl M). It can be said to be the optimal one.

[Brief explanation of drawings]

The drawing is a conceptual diagram showing a system of hot water channels according to an embodiment of the present invention. 10---One source 11---One source pump 12---
m-Condenser 18--One purification monk and heat source water tank 14-
--One hot water storage tank 15---One hot water 16---
Bathtub 21 --- Evaporator patent applicant Maeda Kousakusho Nizu Co., Ltd.! I. Knee” = Kashi t3

Claims (1)

[Claims] 1 In a hot spring heating method using an electric heat pump that supplies hot water to the bathtub, the hot water discharged from the bathroom is stored in an insulated tank that combines purification and hot water storage, and the stored hot water is constantly used as heat source water.
Hot spring heating method using electric heat pump