CN203068706U - Water sheet fresh air system used for cooling and energy saving of machine room and base station - Google Patents
Water sheet fresh air system used for cooling and energy saving of machine room and base station Download PDFInfo
- Publication number
- CN203068706U CN203068706U CN 201320061319 CN201320061319U CN203068706U CN 203068706 U CN203068706 U CN 203068706U CN 201320061319 CN201320061319 CN 201320061319 CN 201320061319 U CN201320061319 U CN 201320061319U CN 203068706 U CN203068706 U CN 203068706U
- Authority
- CN
- China
- Prior art keywords
- air
- water
- cooling
- wet film
- base station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
Abstract
The utility model discloses a water sheet fresh air system used for cooling and energy saving of a machine room and a base station. The water sheet fresh air system comprises an air inlet device and an air outlet device which are mounted on the wall, wherein the air inlet device comprises an outdoor air inlet, an air inlet fan and an indoor air outlet which are arranged sequentially; the air outlet device comprises an indoor air inlet, an air outlet fan and an outdoor air outlet which are arranged sequentially; the air inlet device further comprises a wet film, a sprayer and a water tank; the wet film is placed between the outdoor air inlet and the air inlet fan; the sprayer is placed above the wet film; and the water inlet of the sprayer is connected with the water outlet of the water tank through a water pipe. According to the water sheet fresh air system, outdoor air enters through the outdoor air inlet under the action of an air inlet fan, when the outdoor air passes through the wet film, a part of water is vaporized and absorbs heat due to air flowing, so that the air temperature is decreased by about 5 DEG C to 10 DEG C; the cooled cold air is sent indoors so that the purposes of cooling, cooling humidification and reducing air-conditioning energy consumption are achieved; and the water sheet fresh air system is high in cooling efficiency and energy efficiency ratio, and suitable for the cooling humidification in the machine room and the base station and reducing the air-conditioning energy consumption.
Description
Technical field
The utility model relates to a kind of room air cooling and energy conserving system, relates in particular to a kind of for machine room, base station cooling and energy-conservation cascade VMC.
Background technology
For data center machine room, base station, its energy consumption generally is made up of weak electricity system energy resource consumption five parts such as energy resource consumption, illuminator and the gate inhibition of the energy resource consumption of the energy resource consumption of information technoloy equipment, UPS, air conditioner equipment, fire-fighting, cctv surveillances.Each several part energy consumption ratio is as follows: information technoloy equipment accounts for 50%, and air conditioner equipment accounts for 35%, UPS and accounts for 12%, and illuminator accounts for 2%, and weak electricity system accounts for 1%.Wherein, the power consumption of data center's information technoloy equipment is maximum, secondly is air conditioner equipment power consumption, accounts for 35% of data center's total energy consumption, this shows, the energy-conservation of air conditioner equipment is the important component part of data center/base station whole energy.
Consider the spring and autumn of China's winter or some areas, outside air temperature is lower, if can take full advantage of the natural cooling source cooling technology, outdoor natural environment as low-temperature receiver, namely when outside air temperature is lower than indoor air temperature and acquires a certain degree, by heat exchange the heat in the machine room is taken away to reduce the machine room internal temperature, can effectively utilize natural cooling source, reduce the running time of air-conditioning unit, can save air conditioning energy consumption in theory, prolong the service life of compressor of air conditioner, save the operation cost of enterprise, the conservation of power resource reaches good energy-saving effect.
Traditional intelligent fresh air equipment is exactly the exemplary apparatus that utilizes outdoor cold source energy-conservation.But traditional intelligent fresh air system is affected by the external environment bigger, just can not use (maximum temperature of the indoor permission in machine room/base station is generally 28 degrees centigrade, and it is 5 degrees centigrade that the indoor and outdoor of intelligent fresh air starts the temperature difference) when outdoor temperature is higher than 23 degrees centigrade; And when outdoor dust is more, also be out of use, therefore limited traditional intelligent fresh air being extensive use of in machine room/base station greatly.
The utility model content
The purpose of this utility model provides a kind of for machine room, base station cooling and energy-conservation cascade VMC with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
Be installed on the air-intake device on the wall and go out wind apparatus described in the utility model comprising for machine room, base station cooling and energy-conservation cascade VMC, described air-intake device comprises outdoor air inlet, air intake blower fan and the indoor air outlet that is arranged in order, and describedly goes out wind apparatus and comprises indoor air inlet, air-out blower fan and the outdoor air outlet that is arranged in order; It is characterized in that: described air-intake device also comprises wet film, spray thrower and water tank, described wet film places between described outdoor air inlet and the described air intake blower fan, described spray thrower places the top of described wet film, and the water inlet of described spray thrower is connected with the delivery port of described water tank by water pipe.
During work, outdoor air enters through outdoor air inlet under the effect of air intake blower fan, during through wet film, because flowing, air causes part water liquid vaporization heat absorption, thereby reduce about 5-10 ℃ of air themperature, the cold air after the cooling is sent into the indoor effect that reaches temperature with high efficiency, cooling humidification, saving air conditioning energy consumption.
As preferably, the top opening of described water tank also places the below of described wet film, be provided with water circulating pump between described water tank and the described spray thrower, the delivery port of described water tank is connected with the water inlet of described water circulating pump by water pipe, and the delivery port of described water circulating pump is connected with the water inlet of described spray thrower by water pipe.
For the ease of regulating the size of spray thrower water source current, the delivery port of described water circulating pump is equipped with triple valve, one of them valve port of described triple valve is connected with the water inlet of described spray thrower by water pipe, wherein another valve port of described triple valve by water pipe with insert in the described water tank by water pipe again after control valve is connected.
The casing top of described water tank is provided with water inlet pipe and overflow pipe, and the lower box of described water tank is provided with drainpipe, on the described drainpipe draining valve is installed.
Water in the water tank forms circulation in off-premises station, after after a while, because evaporation can make the water yield reduce, so need to replenish a certain amount of water in water tank.
In order to improve the air purity in the inlet chamber, the inlet air side of described wet film is provided with airstrainer.Airstrainer and wet film form multistage filtering, guarantee to send into indoor with fresh air.
Further, the new air cooling system of described cascade also comprises temperature sensor, humidity sensor, the central processing unit that is installed on indoor and outdoor and is installed on electrically-controlled valve on the described feed pipe, the signal output part of described temperature sensor and the signal output part of described humidity sensor respectively with corresponding connection of signal input part of described central processing unit, the control signal output of described central processing unit is connected with the control end of described electrically-controlled valve.
The beneficial effects of the utility model are:
Compare the traditional intelligence VMC, the utlity model has following advantage:
(1) scope of application of cascade VMC is wider: outdoor new wind is realized the equal-enthalpy humidifying temperature-fall period by wet film, cooling extent is difference along with different chamber's external environment of different regions, general new wind is 5 ~ 10 degrees centigrade through cooling extent behind the wet film, for example: machine room/base station indoor temperature is set at 28 degrees centigrade, traditional intelligence VMC unlocking condition is that outdoor temperature is smaller or equal to 23 degrees centigrade, the utility model cascade VMC unlocking condition is that outdoor temperature is smaller or equal to 28 ~ 30 degrees centigrade, this shows, the scope of application of described cascade VMC is greater than traditional intelligent fresh air, has more generalization;
(2) air purity of cascade VMC is higher: the screen pack of traditional intelligence VMC is roughing efficiency air filter, only can tackle the bulky grain dust effectively, but relatively poor for the more situation filter effect of outdoor dust than granule or outdoor dust; The utility model cascade VMC has multistage filtering, one-level is that roughing efficiency air filter is airstrainer, and secondary is that wet film filters, and can play better filter effect to the dust than granule, under the more situation of outdoor dust, also has goodish filter effect.
(3) the utility model is by arranging temperature sensor, humidity sensor and central processing unit, makes the utility model cascade VMC have Based Intelligent Control, energy-conservation, safe advantage.
Description of drawings
Fig. 1 is the structural representation of the new air cooling system of cascade described in the utility model when using;
Fig. 2 is the structural representation of air-intake device described in the utility model;
Fig. 3 is the structural representation of wet film described in the utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As depicted in figs. 1 and 2, described in the utility model for machine room, base station cooling and energy-conservation cascade VMC comprise the air-intake device 2 that is installed on the wall 5 and go out wind apparatus, described air-intake device comprises the outdoor air inlet 1 that is arranged in order, airstrainer 10, wet film 12, spray thrower 11, water tank 19, air intake blower fan 17 and indoor air outlet 3, airstrainer 10 is arranged at the inlet air side of wet film 12, airstrainer 10 and wet film 12 all place between outdoor air inlet 1 and the air intake blower fan 17, spray thrower 11 places the top of wet film 12, and the water inlet of spray thrower 11 is connected with the delivery port of water tank 19 by water pipe 13; Describedly go out wind apparatus and comprise indoor air inlet 6, air-out blower fan 7 and the outdoor air outlet 8 that connects successively.Air-intake device 2 places the part beyond the wall 5 to install by support 4.
Fig. 2 shows the refined structure of air-intake device, the top opening of water tank 19 also places the below of wet film 12, be provided with water circulating pump 15 between water tank 19 and the spray thrower 11, the delivery port of water tank 19 is connected by the water inlet of water pipe with water circulating pump 15, the delivery port of water circulating pump 15 is equipped with triple valve 14, one of them valve port of triple valve 14 is connected with the water inlet of spray thrower 11 by water pipe 13, wherein another valve port of triple valve 14 by water pipe with after control valve 16 is connected again by in the water pipe access water tank 19; The casing top of water tank 19 is provided with water inlet pipe 18 and overflow pipe 21, and the lower box of water tank 19 is provided with drainpipe, and draining valve 20 is installed on the described drainpipe.
In conjunction with Fig. 1, the new air cooling system of described cascade also comprises temperature sensor, humidity sensor, the central processing unit that is installed on indoor and outdoor and is installed on electrically-controlled valve on the described feed pipe, the signal output part of described temperature sensor and the signal output part of described humidity sensor respectively with corresponding connection of signal input part of described central processing unit, the control signal output of described central processing unit is connected with the control end of described electrically-controlled valve.Owing to be the circuit dependency structure, so said temperature sensor, humidity sensor, central processing unit and electrically-controlled valve all do not illustrate in the drawings.
As shown in Figure 3, wet film 12 is for having certain thickness, water absorbing properties is good and density is lower material formation.
As depicted in figs. 1 and 2, indoor electrical equipment 9 work heatings raise indoor temperature, normally move in order to guarantee electrical equipment, so will be by cascade VMC cooling described in the utility model.During work, outdoor new wind passes through in outdoor air inlet 1, airstrainer 10, wet film 12 and indoor air outlet 3 inlet chambers under the effect of air intake blower fan 17 successively, during through wet film 12, because flowing, air causes part water liquid vaporization heat absorption, thereby reduce about 5-10 ℃ of air themperature, Cryogenic air after the cooling is sent into indoor and hot-air carries out exchange heat, reach the effect to indoor air efficient cooling, cooling humidification, heat-exchanged air is discharged outdoor by indoor air inlet 6, air-out blower fan 7 and outdoor air outlet 8 successively.Wet film 12 can be arranged on one side, also can be arranged on multiaspect, can effectively increase the contact area of the moisture film on new wind and the wet film 12, the process of heat and mass transfer enhancement.Wet film 12 keeps moisture by the spray thrower 11 of its upper end, spray thrower 11 reaches the purpose of the control water yield by central processing unit control water circulating pump 15, triple valve 14 and control valve 16, makes the new wind through wet film 12 reach the cooling maximization, simultaneously, guarantee can not occur " drift ice " phenomenon.
In conjunction with Fig. 1 and Fig. 2, automation control procedure of the present utility model is as follows:
(1) when the temperature difference of the new wind-warm syndrome degree of handling through wet film 12 and indoor design temperature more than 5 ℃ the time, open native system, the air-conditioning in the close chamber, indoor refrigeration duty is provided by native system fully.
(2) when the temperature difference of the new wind-warm syndrome degree of handling through wet film 12 and indoor design temperature below 5 ℃ the time, and the COP that satisfies native system is efficiency than greater than the COP of room conditioning the time, native system and room conditioning are opened simultaneously, and indoor refrigeration duty is born jointly by native system and room conditioning.
(3) when the temperature difference of the new wind-warm syndrome degree of handling through wet film 12 and indoor design temperature below 5 ℃ the time, and the COP that satisfies native system closes native system during less than the COP of room conditioning, indoor refrigeration duty is provided by room conditioning fully.
(4) when outdoor temperature is low (as being lower than 5 ℃), freeze in order to prevent spray thrower 11 and wet film 12, close spray thrower 11, directly send into outdoor new wind indoor.
(5) when indoor humidity is higher, further improve in order to prevent indoor humidity, close spray thrower 11, directly send into outdoor new wind indoor.
Claims (6)
1. one kind is used for machine room, base station cooling and energy-conservation cascade VMC, comprise the air-intake device that is installed on the wall and go out wind apparatus, described air-intake device comprises outdoor air inlet, air intake blower fan and the indoor air outlet that is arranged in order, and describedly goes out wind apparatus and comprises indoor air inlet, air-out blower fan and the outdoor air outlet that is arranged in order; It is characterized in that: described air-intake device also comprises wet film, spray thrower and water tank, described wet film places between described outdoor air inlet and the described air intake blower fan, described spray thrower places the top of described wet film, and the water inlet of described spray thrower is connected with the delivery port of described water tank by water pipe.
2. according to claim 1 for machine room, base station cooling and energy-conservation cascade VMC, it is characterized in that: the top opening of described water tank also places the below of described wet film, be provided with water circulating pump between described water tank and the described spray thrower, the delivery port of described water tank is connected with the water inlet of described water circulating pump by water pipe, and the delivery port of described water circulating pump is connected with the water inlet of described spray thrower by water pipe.
3. according to claim 2 for machine room, base station cooling and energy-conservation cascade VMC, it is characterized in that: the delivery port of described water circulating pump is equipped with triple valve, one of them valve port of described triple valve is connected with the water inlet of described spray thrower by water pipe, wherein another valve port of described triple valve by water pipe with insert in the described water tank by water pipe again after control valve is connected.
4. according to claim 1,2 or 3 described for the cooling of machine room, base station and energy-conservation cascade VMC, it is characterized in that: the casing top of described water tank is provided with water inlet pipe and overflow pipe, the lower box of described water tank is provided with drainpipe, on the described drainpipe draining valve is installed.
5. according to claim 1,2 or 3 described for the cooling of machine room, base station and energy-conservation cascade VMC, it is characterized in that: the inlet air side of described wet film is provided with airstrainer.
6. according to claim 1 for machine room, base station cooling and energy-conservation cascade VMC, it is characterized in that: the new air cooling system of described cascade also comprises temperature sensor, humidity sensor, the central processing unit that is installed on indoor and outdoor and is installed on electrically-controlled valve on the described feed pipe, the signal output part of described temperature sensor and the signal output part of described humidity sensor respectively with corresponding connection of signal input part of described central processing unit, the control signal output of described central processing unit is connected with the control end of described electrically-controlled valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320061319 CN203068706U (en) | 2013-02-04 | 2013-02-04 | Water sheet fresh air system used for cooling and energy saving of machine room and base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320061319 CN203068706U (en) | 2013-02-04 | 2013-02-04 | Water sheet fresh air system used for cooling and energy saving of machine room and base station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203068706U true CN203068706U (en) | 2013-07-17 |
Family
ID=48767485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320061319 Expired - Lifetime CN203068706U (en) | 2013-02-04 | 2013-02-04 | Water sheet fresh air system used for cooling and energy saving of machine room and base station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203068706U (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398441A (en) * | 2013-07-18 | 2013-11-20 | 天津时势科技有限公司 | Fresh air purification device |
| CN104329756A (en) * | 2014-11-05 | 2015-02-04 | 深圳海悟科技有限公司 | Fresh air conditioning system |
| CN105180314A (en) * | 2014-06-03 | 2015-12-23 | 姚松良 | Integrated ceiling module used for purifying indoor air |
| CN106123257A (en) * | 2016-08-06 | 2016-11-16 | 广州威能机电有限公司 | Diesel generating set operation control system and method |
| CN106403101A (en) * | 2016-08-31 | 2017-02-15 | 安徽瑞宏信息科技有限公司 | Intelligent energy-saving type ventilation device of machine room |
| CN107975898A (en) * | 2017-11-24 | 2018-05-01 | 四川依米康环境科技股份有限公司 | One kind evaporates cold evaporated water control device and its control method |
| CN109289424A (en) * | 2018-11-14 | 2019-02-01 | 苏州安瑞可信息科技有限公司 | A kind of warehouse style micromodule |
| CN109289423A (en) * | 2018-11-14 | 2019-02-01 | 苏州安瑞可信息科技有限公司 | A kind of data center |
| CN109751668A (en) * | 2019-02-22 | 2019-05-14 | 青岛海信电子设备股份有限公司 | Air-conditioning between a kind of column |
| CN109862626A (en) * | 2019-03-25 | 2019-06-07 | 中铁建设集团有限公司 | Fire-proof smoke-proof emergency guarantee communicates the base station 5G |
| CN110748963A (en) * | 2019-11-14 | 2020-02-04 | 珠海格力电器股份有限公司 | Air conditioner system, air conditioner and control method of air conditioner |
| CN110748972A (en) * | 2019-11-14 | 2020-02-04 | 珠海格力电器股份有限公司 | Humidifying device, air conditioner and control method of air conditioner |
| CN110748969A (en) * | 2019-11-14 | 2020-02-04 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN112721686A (en) * | 2021-01-21 | 2021-04-30 | 深圳市米尔电子有限公司 | Fill electric pile with integration intelligent control terminal |
-
2013
- 2013-02-04 CN CN 201320061319 patent/CN203068706U/en not_active Expired - Lifetime
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398441A (en) * | 2013-07-18 | 2013-11-20 | 天津时势科技有限公司 | Fresh air purification device |
| CN105180314A (en) * | 2014-06-03 | 2015-12-23 | 姚松良 | Integrated ceiling module used for purifying indoor air |
| CN104329756A (en) * | 2014-11-05 | 2015-02-04 | 深圳海悟科技有限公司 | Fresh air conditioning system |
| CN104329756B (en) * | 2014-11-05 | 2017-12-19 | 广东海悟科技有限公司 | A kind of fresh air conditioner system |
| CN106123257A (en) * | 2016-08-06 | 2016-11-16 | 广州威能机电有限公司 | Diesel generating set operation control system and method |
| CN106403101A (en) * | 2016-08-31 | 2017-02-15 | 安徽瑞宏信息科技有限公司 | Intelligent energy-saving type ventilation device of machine room |
| CN107975898A (en) * | 2017-11-24 | 2018-05-01 | 四川依米康环境科技股份有限公司 | One kind evaporates cold evaporated water control device and its control method |
| WO2020098155A1 (en) * | 2018-11-14 | 2020-05-22 | 苏州安瑞可信息科技有限公司 | Warehouse type micromodule |
| CN109289424A (en) * | 2018-11-14 | 2019-02-01 | 苏州安瑞可信息科技有限公司 | A kind of warehouse style micromodule |
| CN109289423A (en) * | 2018-11-14 | 2019-02-01 | 苏州安瑞可信息科技有限公司 | A kind of data center |
| US11297740B2 (en) | 2018-11-14 | 2022-04-05 | Suzhou A-Rack Information Technology Co., Ltd | Storage-type modular data center |
| CN109751668A (en) * | 2019-02-22 | 2019-05-14 | 青岛海信电子设备股份有限公司 | Air-conditioning between a kind of column |
| CN109862626A (en) * | 2019-03-25 | 2019-06-07 | 中铁建设集团有限公司 | Fire-proof smoke-proof emergency guarantee communicates the base station 5G |
| CN109862626B (en) * | 2019-03-25 | 2023-04-28 | 中铁建设集团有限公司 | Fire-proof smoke-proof emergency guarantee communication 5G base station |
| CN110748969A (en) * | 2019-11-14 | 2020-02-04 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN110748972A (en) * | 2019-11-14 | 2020-02-04 | 珠海格力电器股份有限公司 | Humidifying device, air conditioner and control method of air conditioner |
| CN110748963A (en) * | 2019-11-14 | 2020-02-04 | 珠海格力电器股份有限公司 | Air conditioner system, air conditioner and control method of air conditioner |
| CN110748963B (en) * | 2019-11-14 | 2024-02-27 | 珠海格力电器股份有限公司 | Air conditioner system, air conditioner and control method of air conditioner |
| CN110748969B (en) * | 2019-11-14 | 2024-02-27 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| CN112721686A (en) * | 2021-01-21 | 2021-04-30 | 深圳市米尔电子有限公司 | Fill electric pile with integration intelligent control terminal |
| CN112721686B (en) * | 2021-01-21 | 2022-08-19 | 深圳市米尔电子有限公司 | Fill electric pile with integration intelligent control terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203068706U (en) | Water sheet fresh air system used for cooling and energy saving of machine room and base station | |
| CN108105898B (en) | Adiabatic closed cooling system for data center and cooling method thereof | |
| CN103499137B (en) | The refrigeration control method of a kind of machine room, Apparatus and system | |
| CN110748970B (en) | Air conditioning system and control method thereof | |
| CN102967019A (en) | Direct evaporation integral heat pipe exchanger | |
| CN103776116A (en) | Evaporative cooling and traditional refrigeration combined air conditioning device and air conditioning method thereof | |
| CN108036657B (en) | Combined type water-saving closed cooling tower and control method thereof | |
| WO2020187010A1 (en) | Cold-heat dual-storage-type room air conditioning device | |
| CN202709319U (en) | Energy-saving air conditioning system with intelligent targeted refrigeration function | |
| CN203980561U (en) | A kind of machine room natural cooling source energy conserving system | |
| CN104613574A (en) | Independent temperature and humidity control type air conditioning system based on energy gradient utilization | |
| CN111295084A (en) | Indirect evaporative cooling air conditioning unit using condenser and evaporator | |
| CN209982958U (en) | Indirect evaporative cooling air conditioning unit for data center | |
| CN102954548A (en) | Direct evaporation split type heat pipe heat-exchanger | |
| CN203857596U (en) | Air conditioning device combining evaporative cooling and traditional refrigeration | |
| CN203642444U (en) | Energy-saving air conditioner | |
| CN209840328U (en) | Double-cold evaporative cooling-condensation integrated air conditioning unit for data center machine room | |
| CN109990413B (en) | Air conditioning unit with combination of gravity heat pipe and dew point indirect evaporative cooler | |
| CN208222729U (en) | Air purifier | |
| CN217519982U (en) | Indirect evaporation air-conditioning system based on solution dehumidification for data center | |
| CN207334994U (en) | A kind of computer room constant humidity machine | |
| CN110243034A (en) | A kind of energy-saving all-fresh air air-conditioning device based on energy tower | |
| CN203747269U (en) | Ventilating and dehumidifying system for control cabinet | |
| CN107355920B (en) | Energy recovery type intelligent full fresh air processing unit | |
| CN214469042U (en) | Indirect evaporative cooling device capable of preventing condensation and frosting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |